Casement Window Types: Complete Homeowner’s Guide

What Are the Main Types of Casement Windows

Casement windows are one of the most popular and versatile window styles used in modern homes. They open outward or inward using side, top, or bottom hinges, allowing excellent ventilation and natural light. Designed for both efficiency and functionality, they seal tightly when closed — making them ideal for Canada’s variable climate.

Understanding the different types of casement windows helps homeowners choose the right design for performance, aesthetics, and ease of use.

1. Single Casement Windows

A single casement window features one sash hinged on either the left or right side. When opened, it swings outward (or occasionally inward) like a door. This simple design is popular for bedrooms, bathrooms, and kitchens.

Advantages:

• Provides full, unobstructed ventilation from top to bottom.
• Creates a tight air seal when closed, improving energy efficiency.
• Easy to operate with a single handle or crank system.

Performance:
According to Natural Resources Canada (NRCan), single casement windows are among the top-rated designs for air tightness and insulation performance, especially when equipped with Low-E glass and argon gas fills.

2. Double Casement Windows

A double casement window (also known as a twin casement) includes two sashes that open outward from the center. Each sash operates independently, offering flexible ventilation control.

Key Benefits:

• Allows airflow from both sides of the window opening.
• Can be installed with a central post or in a post-free design for a wider viewing area.
• Works well for larger wall openings or living room spaces.

This design combines energy efficiency with design symmetry, giving homes a balanced, modern appearance.

3. French Casement Windows

French casement windows resemble traditional double casement units but lack a central mullion (post) between the two sashes. When opened, both panes swing outward completely, leaving the full opening unobstructed.

Benefits:

• Provides the largest possible ventilation area.
• Offers a clean, elegant look similar to French doors.
• Enhances emergency egress in bedrooms or basements.

Because of their full, open design, French casement windows are often chosen for upscale architectural projects or where maximum airflow and aesthetics are priorities.

4. Top-Hung Casement Windows

A top-hung casement is hinged at the top and opens outward from the bottom. Often referred to as an awning window when wider than tall, this type provides excellent ventilation while keeping out rain.

Advantages:

• Can remain open during light rain since the sash acts as a small canopy.
• Ideal for basements, bathrooms, or above kitchen sinks.
• Excellent for maintaining privacy while still ventilating.

In cold or wet regions like Toronto, top-hung casements are favored for their combination of weather resistance and energy performance.

5. Push-Out Casement Windows

Unlike crank-operated models, push-out casement windows open manually by pushing the sash outward. They often feature friction hinges that hold the sash in place at the desired angle.

Why homeowners like them:

• Traditional, elegant operation without visible hardware.
• Easy to clean and ideal for heritage-style or minimalist designs.
• Allows precise control of ventilation levels.

When combined with modern seals and insulated glass, push-out casement windows deliver the same energy performance as crank versions, but with a classic appearance.

Comparative Table: Types of Casement Windows

Window Type	Hinge Position	Operation Method	Ventilation	Energy Efficiency	Common Locations
Single Casement	Side	Crank or push-out	Excellent	High	Bedrooms, kitchens
Double Casement	Side (both)	Crank	Excellent	High	Living rooms, large openings
French Casement	Side (both, no mullion)	Crank or push-out	Maximum	High	Main floors, patios
Top-Hung Casement	Top	Crank or latch	Moderate to high	High	Basements, bathrooms
Push-Out Casement	Side	Manual push	Adjustable	High	Heritage or modern homes

Energy Efficiency and Ventilation Benefits

Casement windows, regardless of design type, are recognized for superior sealing and ventilation efficiency. When closed, the sash presses firmly against the frame, minimizing air leakage. When open, the sash acts like a scoop, directing fresh air into the room.

According to the Canadian Window and Door Manufacturers Association (CWDMA), casement designs outperform sliding windows in both air infiltration resistance and U-factor ratings. For homeowners in Ontario’s climate, this translates into reduced energy bills and improved year-round comfort.

Each casement window type offers unique advantages:

• Single and double casements provide balanced performance and versatility.
• French casements excel in style and openness.
• Top-hung units deliver superior rain protection.
• Push-out models blend traditional design with modern efficiency.

TotalSeal Windows manufactures and installs all major casement window types, ensuring optimal fit, performance, and aesthetic appeal for every home design in Toronto and the GTA.

How Do Left-Hand and Right-Hand Casement Windows Differ

When selecting casement windows, one of the most commonly overlooked details is hand orientation — whether a window is left-hand or right-hand operated. This distinction determines the hinge position, the direction the sash opens, and how the window fits within your room’s layout. Understanding this difference helps homeowners choose the most practical and visually balanced configuration for each space.

Understanding Hand Orientation

A casement window’s “hand” refers to the side on which the window is hinged. It’s defined from the perspective of looking at the window from inside your home:

• Left-hand casement window: Hinges are on the left side, and the window swings outward to the left.
• Right-hand casement window: Hinges are on the right side, and the window swings outward to the right.

This orientation is especially important for airflow direction, furniture placement, and ease of operation — for example, whether the handle or crank is more conveniently located.

Practical Differences Between Left- and Right-Hand Casements

The choice between left-hand and right-hand casement windows often depends on room configuration, window placement, and prevailing wind direction. The goal is to maximize airflow while ensuring easy access for operation and maintenance.

Feature	Left-Hand Casement	Right-Hand Casement
Hinge Placement	Left side when viewed from inside	Right side when viewed from inside
Swing Direction	Outward to the left	Outward to the right
Handle Position	On the right side	On the left side
Best For	Windows on the left side of walls or corners	Windows on the right side of walls or corners
Ventilation Pattern	Directs airflow inward from the right	Directs airflow inward from the left
Accessibility	Ideal for right-handed users near counters or obstacles	Ideal for left-handed users or tight spaces on the left

How to Choose the Correct Hand for Each Room

1. Consider Furniture Layout: Avoid windows that open toward obstructions like cabinets, walls, or furniture. For example, over a kitchen sink, a right-hand casement may open more easily if the countertop extends leftward.
2. Plan for Airflow Direction: If you want to direct fresh air toward a specific part of a room, choose the hinge side that catches the prevailing wind.
3. Match Visual Symmetry: When installing multiple casement windows side by side, using opposite hands (left on one side, right on the other) creates a balanced, symmetrical appearance.
4. Ease of Use: For rooms where windows are frequently opened, consider which hand orientation allows for more natural operation based on the user’s dominant hand.

 

Energy Efficiency and Airflow Considerations

While both orientations perform equally in terms of energy efficiency and sealing, their positioning can affect how air flows into your home. In Toronto’s climate, pairing left- and right-hand casements strategically can create a natural cross-breeze — improving ventilation without increasing energy use.

For example:

• Left-hand casement windows on the north or east sides of the house catch cool morning air.
• Right-hand casements on the south or west sides help release warm air in the evening.

Best Practices for Installation

Professional installers typically alternate hand orientations in multi-window setups to balance aesthetics and airflow. It’s also important to ensure all cranks and locks are accessible and consistent in operation across different rooms.

According to installation guidelines from the Canadian Window and Door Manufacturers Association (CWDMA), correct hinge orientation contributes to better ergonomics, improved usability, and even distribution of natural ventilation.

The choice between left-hand and right-hand casement windows may seem minor, but it significantly impacts day-to-day convenience, airflow, and room balance. Planning hinge placement carefully ensures your casement windows not only look harmonious but also function efficiently throughout every season.

TotalSeal Windows provides custom left- and right-hand casement configurations designed to fit each home’s layout and airflow needs, ensuring smooth operation and long-term energy performance.

What Are the Different Hinge Types Used in Casement Windows

Casement windows rely on hinges for smooth operation, stability, and long-term durability. The hinge type directly affects how easily the sash opens, how secure it feels in windy conditions, and how simple it is to clean or maintain. Modern casement windows, including those from TotalSeal Windows, are engineered with specialized hinges designed for both performance and longevity.

1. Standard Hinges

Standard casement hinges are the most common type, found in traditional window systems. They allow the sash to swing outward at a fixed angle and are built to handle everyday residential use.

Characteristics:

• Simple, reliable design suitable for most window sizes.
• Typically constructed from stainless steel or galvanized metal for corrosion resistance.
• Compatible with both crank-operated and push-out casement windows.

Best Use: Standard hinges are ideal for small to medium-sized casement windows where maximum opening angle and simple maintenance are priorities.

2. Friction Stay Hinges

Friction stay hinges are one of the most advanced and popular hinge systems in modern casement windows. They use a built-in friction mechanism to hold the window in any open position without additional support arms or stops.

Key Benefits:

• Allows adjustable ventilation — the window stays open at any desired angle.
• Provides enhanced wind resistance; the sash won’t slam shut in a breeze.
• Smooth, controlled motion for safety and comfort.

These hinges are often used in push-out casement models, providing a minimalist look with precise control. In climates like Toronto’s, where gusty conditions are common, friction stay hinges are highly recommended for stability and usability.

3. Butt Hinges

Butt hinges are traditional-style hinges similar to those used on doors. Each hinge consists of two plates joined by a central pin, allowing a simple swing motion.

Advantages:

• Durable and easy to replace.
• Suitable for smaller, lighter sash windows.
• Can be concealed for a clean, classic appearance.

Limitations:

• Less effective for large or heavy sashes.
• Requires periodic lubrication and maintenance to prevent squeaking or sticking.

Butt hinges are often used in heritage or restoration projects where maintaining a traditional aesthetic is important.

4. Egress Hinges

Egress hinges are designed to meet building code requirements for emergency escape routes, especially in bedrooms and basements. They allow the sash to open wider than standard hinges, creating a larger clear opening.

Features:

• Opens up to 90 degrees for emergency egress.
• Built with quick-release mechanisms for easy sash removal or cleaning.
• Combines safety compliance with practicality.

In Ontario, many building codes require egress-compliant windows in sleeping areas, making this hinge type both a safety and legal necessity.

Comparative Hinge Specification Table

Hinge Type	Opening Angle	Best For	Durability	Maintenance	Key Benefit
Standard	45°–60°	Everyday use	High	Low	Reliable and simple operation
Friction Stay	Adjustable up to 90°	Push-out windows	Very High	Low	Holds open at any angle
Butt	45°–60°	Traditional/heritage homes	Medium	Moderate	Classic design, easy replacement
Egress	Up to 90°+	Bedrooms, basements	High	Low	Safety and wide escape opening

Durability and Performance Insights

Research from the Canadian Window and Door Manufacturers Association (CWDMA) indicates that friction stay and egress hinges show the best long-term performance under repeated use, maintaining functionality for over 20,000 open/close cycles when properly lubricated.

Hinges made from stainless steel or zinc-coated alloys also provide superior corrosion resistance — an important factor in Toronto’s humid and freeze-thaw conditions.

Choosing the right hinge type depends on your window size, design goals, and functional requirements:

• Standard and friction stay hinges are ideal for most residential windows.
• Butt hinges suit traditional aesthetics and lighter frames.
• Egress hinges are mandatory where safety regulations require emergency exits.

TotalSeal Windows integrates premium-grade hinges into all its casement systems, ensuring consistent performance, easy operation, and long-lasting reliability for every home.

What Latch Options Exist for Casement Windows

Casement windows use various latch mechanisms to ensure a tight seal, smooth operation, and reliable security. The latch type influences not only how easily the window opens and closes but also how effectively it prevents air leaks and maintains insulation. Understanding each option helps homeowners choose the best design for both practicality and comfort.

1. Espagnolette Locks

Espagnolette locks are the most common latch type used in modern casement windows. They feature a rotating handle connected to a vertical metal rod that secures the sash at multiple points along the frame.

Key Features:

• Multi-point locking mechanism distributes pressure evenly across the frame.
• Creates a tight, weather-resistant seal for superior insulation.
• Easy single-handle operation with smooth engagement.

Advantages:

• Excellent energy efficiency due to uniform compression of the sash.
• High durability with minimal maintenance requirements.
• Available in various finishes for modern or traditional interiors.

Espagnolette systems are standard on most TotalSeal Windows casement designs, combining reliability with contemporary aesthetics.

2. Multi-Point Locks

Multi-point locks function similarly to espagnolette systems but include additional locking points — sometimes three or more — around the sash perimeter. When the handle is turned, each locking pin engages simultaneously, improving both security and energy retention.

Benefits:

• Enhanced resistance to drafts and forced entry.
• Greater pressure balance across the frame, reducing long-term wear.
• Compatible with both crank and push-out window styles.

Multi-point locks are ideal for large or heavy casement windows, where structural integrity and airtight sealing are critical.

3. Cam Locks

Cam locks are compact mechanisms that use a cam-shaped lever to pull the sash tightly against the frame when turned. They’re commonly found on smaller casement or awning windows where space is limited.

Features:

• Simple design with quick, secure locking motion.
• Often made from zinc or stainless steel for long-term corrosion resistance.
• Easy to operate and replace.

Advantages:

• Cost-effective and durable.
• Provides adequate sealing for smaller windows.
• Can be paired with secondary locks for additional security.

While cam locks are less sophisticated than multi-point systems, they perform well in compact installations and are widely used for secondary or basement windows.

Comparison Table: Casement Window Latch Types

Latch Type	Locking Mechanism	Operation Method	Durability	Ideal Window Size	Aesthetic Style
Espagnolette	Multi-point vertical rods	Single handle turn	High	Medium–large	Modern or traditional
Multi-Point	Multi-pin locking system	Single handle turn	Very High	Large	Contemporary
Cam Lock	Single cam lever	Manual lever turn	Medium	Small–medium	Minimalist or utility

Performance and Maintenance Insights

From a performance standpoint, multi-point and espagnolette latches deliver the most consistent air sealing and long-term reliability. The distributed locking pressure minimizes frame stress and prevents warping over time.

All latch types should be inspected periodically for dirt buildup or loose screws, as proper alignment is essential to maintain window efficiency and security.

Choosing the right latch type depends on window size, location, and design preferences:

• Espagnolette locks offer balanced performance and style for most homes.
• Multi-point systems provide top-tier sealing and security for larger windows.
• Cam locks are best suited for smaller or utility spaces.

TotalSeal Windows integrates premium-grade latch mechanisms into all casement designs, ensuring dependable operation, long-lasting durability, and a clean, cohesive look across every window style.

What Are the Various Casement Window Opening Types

Casement windows can open in several ways depending on the hinge placement and the mechanism used. The type of opening affects ventilation, energy efficiency, and ease of cleaning. Understanding the available options helps homeowners choose the right style for both function and design consistency throughout the home.

1. Inward-Opening Casement Windows

Inward-opening casement windows swing inside the room rather than outward. They are more common in European-style homes and are designed for spaces where exterior clearance might be limited.

Advantages:

• Easy to clean from indoors without needing exterior access.
• Better suited for upper floors or areas close to walkways or decks.
• Allows safe ventilation in windy conditions.

Considerations:

• Requires clear interior space to open fully.
• Less ideal for smaller rooms or areas with furniture near the wall.

Inward casements are often paired with tilt-and-turn functionality in modern home designs, offering versatility and strong energy efficiency.

2. Outward-Opening Casement Windows

Outward-opening casements are the standard configuration in North American homes. The sash swings outward, allowing maximum airflow and unobstructed interior space.

Benefits:

• Excellent ventilation; catches side breezes effectively.
• Tight weather seal when closed for improved energy performance.
• Does not interfere with interior blinds or drapes.

Outward-opening casements are also easier to integrate with fly screens and are highly favored for Toronto’s variable weather because they seal tightly against wind and rain.

3. Side-Hung Casement Windows

Side-hung casement windows are hinged vertically on one side, allowing them to swing open like a door. This is the most common casement configuration.

Features:

• Provides full top-to-bottom ventilation.
• Ideal for directing airflow into the home.
• Can be left- or right-hand operated depending on placement.

This type is especially popular for living rooms, bedrooms, and kitchens, offering both energy performance and user-friendly operation.

4. Top-Hung Casement Windows

Top-hung casement windows (sometimes called awning windows when wider than tall) are hinged at the top and open outward from the bottom. The design allows airflow while protecting against rain.

Advantages:

• Ventilation without water intrusion during light rain.
• Secure even when partially open.
• Great for basements, bathrooms, or high-humidity areas.

Their angled design improves thermal performance and ensures durability in wet or windy conditions.

5. Push-Out Casement Windows

Push-out casement windows open manually by pushing the sash outward rather than using a crank mechanism. This gives a clean, traditional look while maintaining modern efficiency.

Highlights:

• Simple operation with friction hinges to hold the sash in position.
• No visible crank hardware for a minimalist aesthetic.
• Ideal for heritage or custom-designed homes.

Push-out designs blend elegance with practicality, offering flexible ventilation and easy cleaning access.

Comparison Table: Casement Window Opening Types

Opening Type	Hinge Placement	Opening Direction	Operation	Ventilation	Maintenance
Inward-Opening	Side	Inward	Handle or lever	Good	Easy (from indoors)
Outward-Opening	Side	Outward	Crank or push-out	Excellent	Moderate
Side-Hung	Side	Outward or inward	Crank or handle	Excellent	Moderate
Top-Hung	Top	Outward (bottom tilt)	Crank or latch	Moderate	Low
Push-Out	Side	Outward	Manual push	Adjustable	Easy

Performance Insights

The side-hung and outward-opening types deliver the best airflow and overall energy performance for Canadian homes. Top-hung models are favored for moisture control, while inward-opening designs are excellent for upper floors or limited outdoor space.

According to the Canadian Window and Door Manufacturers Association (CWDMA), modern casement windows with insulated frames and multi-point locks outperform sliding windows by 20–30% in airtightness and heat retention.

Casement windows offer a wide variety of opening options to meet different architectural and practical needs:

• Side-hung and outward-opening types provide maximum ventilation.
• Top-hung casements enhance rain protection.
• Inward-opening windows simplify cleaning for upper floors.
• Push-out designs combine traditional charm with modern efficiency.

TotalSeal Windows manufactures all major casement window configurations, ensuring each system is optimized for performance, comfort, and ease of use in Toronto’s climate.

When Is a Top-Hung Casement Window the Right Choice

A top-hung casement window is an excellent solution for homeowners who want effective ventilation, rain protection, and a modern design aesthetic. Hinged at the top and opening outward from the bottom, this style offers both practicality and performance in diverse weather conditions — making it a popular choice across Canada, particularly in the Greater Toronto Area.

Key Advantages of Top-Hung Casement Windows

Top-hung casements are designed to maximize airflow while minimizing exposure to rain and debris. Their unique construction allows air to flow in through the bottom and sides of the sash while the top acts as a shield.

Primary benefits include:

• Ventilation in all conditions: Even during light rain, these windows can remain open without allowing moisture inside.
• Enhanced weather protection: The slanted opening design deflects rainwater away from the interior.
• Improved privacy: Ideal for bathrooms or bedrooms where visibility from outside should be limited.
• Compact footprint: Suitable for small or high wall openings.

Their practicality makes them ideal for multi-level homes, bathrooms, basements, and modern urban spaces where air circulation and protection are top priorities.

Energy Efficiency and Climate Performance

In colder regions like Ontario, top-hung casement windows deliver strong thermal performance due to their tight-sealing design. When closed, the sash presses firmly against the frame, creating an air-tight seal that prevents drafts and heat loss.

Performance insights:

• Rated for high air infiltration resistance and low U-factor values comparable to side-hung casement models.
• Compatible with Low-E coated glass and argon gas-filled glazing for year-round energy efficiency.
• Effective moisture barriers protect against condensation and humidity build-up.

Top-hung systems are often paired with multi-point locking mechanisms to enhance compression and improve security.

Design and Aesthetic Appeal

Beyond functionality, top-hung casements contribute to a clean, modern exterior look. Their horizontal alignment fits seamlessly with contemporary architecture while offering flexible installation options for tight spaces.

Design advantages:

• Streamlined frames maintain minimalist aesthetics.
• Ideal for combining with fixed or picture windows for wider views.
• Available in custom finishes and materials including vinyl, aluminum-clad, and fiberglass.

For homeowners seeking a subtle yet effective ventilation system, top-hung designs blend functionality with modern styling.

Comparison Table: Top-Hung Casement Benefits

Feature	Description	Benefit
Ventilation	Opens outward from the bottom	Allows airflow even during rain
Weather Resistance	Hinged at the top, slanted design	Deflects water and debris
Energy Efficiency	Tight compression seal	Reduces heat loss and drafts
Maintenance	Easy to clean and operate	Low upkeep requirements
Installation Versatility	Suitable for basements, bathrooms, modern facades	Compact and adaptable

Use Cases in Canadian Homes

Across Ontario and other Canadian provinces, top-hung casement windows are frequently chosen for:

• Bathrooms – Providing privacy with natural airflow.
• Basements – Maintaining ventilation and moisture control.
• Condos and urban homes – Maximizing efficiency in smaller wall spaces.
• Modern exteriors – Offering a sleek, architectural appearance.

Builders and renovation specialists often recommend these windows for energy-efficient designs where protection from rain and condensation is a key concern.

Top-hung casement windows are ideal for homeowners looking for efficient ventilation, reliable rain protection, and minimalist aesthetics. Their durable construction, strong insulation, and easy operation make them suitable for both traditional and contemporary homes.

TotalSeal Windows offers a full selection of top-hung casement models engineered for performance in Toronto’s variable climate — combining superior weather resistance, modern design, and long-lasting efficiency.

Which Casement Window Type Is Best for Your Home

Choosing the right casement window type depends on your home’s architecture, climate, and specific energy performance goals. Each design — from single to top-hung — offers unique advantages that make it suitable for different spaces and environmental conditions.

Factors to Consider When Choosing a Casement Window

Before deciding on a window style, homeowners should assess key factors that influence comfort, cost, and long-term efficiency:

1. Climate: In regions like Toronto, with cold winters and humid summers, airtight seals and insulated frames are critical. Outward-opening or top-hung casements perform best in such conditions.
2. Ventilation Needs: Rooms like kitchens and bathrooms require consistent airflow — side-hung or top-hung models work well here.
3. Space Availability: Inward-opening designs suit locations with limited exterior clearance, while outward-opening styles are ideal for wide-open facades.
4. Design Preferences: Homeowners can choose between modern crank-operated or traditional push-out mechanisms to match interior aesthetics.
5. Maintenance: Vinyl and fiberglass frames paired with multi-point locks reduce upkeep while maintaining long-term durability.

Performance Overview by Window Type

Casement Type	Energy Efficiency	Ventilation	Ideal Use	Maintenance	Design Suitability
Single Casement	★★★★★	Excellent	Bedrooms, kitchens	Low	Modern and classic homes
Double Casement	★★★★★	Excellent	Living rooms, large openings	Low	Contemporary styles
French Casement	★★★★☆	Maximum	Main floors, patios	Moderate	Elegant and upscale designs
Top-Hung Casement	★★★★☆	Moderate to High	Bathrooms, basements	Low	Modern and compact spaces
Push-Out Casement	★★★★☆	Adjustable	Heritage or minimalist homes	Moderate	Traditional appearances

Matching Casement Types to Room Function

• Living Rooms: Double or French casements enhance symmetry and allow full natural light.
• Bedrooms: Single casement windows with Low-E glass and multi-point locks offer insulation and privacy.
• Bathrooms: Top-hung models ensure ventilation while preventing water entry.
• Kitchens: Side-hung or push-out types work best above sinks or countertops for easy access.
• Basements: Top-hung or smaller side-hung casements improve airflow and meet safety requirements.

Energy Efficiency in Canadian Climates

According to Natural Resources Canada (NRCan), casement windows with insulated frames and dual-pane Low-E glass are among the top performers for heat retention in cold climates. Outward-opening styles create a compression seal that minimizes air leakage — an advantage over sliding or hung windows.

In homes where energy costs are a major concern, combining vinyl or fiberglass frames with argon-filled glass provides the highest long-term savings and comfort.

Aesthetic and Architectural Harmony

Beyond functionality, casement windows can complement any architectural design — from heritage restorations to ultra-modern homes. For example:

• French casements add elegance to traditional exteriors.
• Push-out designs pair well with minimalist or rustic styles.
• Top-hung units emphasize contemporary lines and symmetry.

The choice often depends on how the window aligns with other design elements like doors, siding, and trim.

Summary Table: Recommended Casement Types by Priority

Priority	Recommended Type	Reason
Energy Efficiency	Single or Double Casement	Tight compression seals and Low-E options
Ventilation	French or Side-Hung Casement	Maximum airflow and full opening area
Rain Protection	Top-Hung Casement	Deflects water and allows airflow during rain
Ease of Use	Push-Out Casement	Simple manual operation with friction stays
Aesthetic Design	French Casement	Balanced look and wide unobstructed view

Final Recommendations

For most Toronto homeowners, the best overall balance of performance, style, and affordability comes from single or double casement windows. These designs deliver superior energy efficiency, strong ventilation, and low maintenance — all essential for Canada’s changing weather conditions.

Homeowners seeking design flexibility or specific performance benefits can explore TotalSeal’s full range of casement window options, engineered for durability and tailored to each home’s unique layout and energy goals.