Exploring Common Casement Window Sizes for Your Home

When it comes to choosing the perfect windows for your home, one of the key factors to consider is the size. Casement windows, known for their versatility and ease of operation, are a popular choice among homeowners. In this blog post, we will delve into the world of typical casement window sizes, helping you to make an informed decision when selecting the best fit for your home.

Understanding Casement Windows

Casement windows are hinged on one side and swing outward, usually operated by a crank or lever. They provide excellent ventilation and unobstructed views, making them an ideal choice for various architectural styles. Additionally, casement windows are known for their energy efficiency, as they seal tightly when closed, preventing drafts and heat loss.

Standard Casement Window Sizes

There are several standard casement window sizes available in the market. These sizes are designed to fit the majority of residential construction requirements and are typically available in both stock and custom options. Here are some of the most common casement window sizes you may encounter:

Small Casement Windows

1'6" x 2'6" (18" x 30")

1'8" x 2'8" (20" x 32")

2'0" x 2'0" (24" x 24")

These smaller sizes are perfect for bathrooms, basements, or other areas where space is limited. They provide ample light and ventilation while maintaining privacy.

Medium Casement Windows

2'0" x 3'0" (24" x 36")

2'2" x 4'0" (26" x 48")

2'6" x 3'6" (30" x 42")

Medium-sized casement windows are suitable for bedrooms, living rooms, or kitchens. They offer a balance between natural light and ventilation, making them a popular choice for many homeowners.

Large Casement Windows

3'0" x 4'0" (36" x 48")

3'0" x 5'0" (36" x 60")

3'0" x 6'0" (36" x 72")

Large casement windows are perfect for spaces where maximizing natural light and views is a priority, such as sunrooms or living areas with scenic views. These windows can also be paired with other window styles, such as picture or transom windows, to create stunning architectural features.

Custom Casement Window Sizes

While standard casement window sizes cater to most residential needs, there may be instances where a custom size is necessary. This could be due to unique architectural elements, historic homes, or simply personal preference. Custom casement windows can be designed to fit any dimensions and are available in a wide range of materials, finishes, and styles to suit your specific requirements.

Factors to Consider When Choosing Casement Window Sizes

When selecting the appropriate casement window size for your home, there are several factors to keep in mind:

1. Room size and function: Consider the size and purpose of the room where the window will be installed. Smaller windows may be more suitable for bathrooms and utility rooms, while larger windows can enhance living spaces and bedrooms.

2. Natural light and ventilation: Assess the amount of natural light and ventilation required for the space. Larger windows will allow more light and air to enter, while smaller windows may be more appropriate for areas where privacy is a concern.

3. Architectural style: Ensure that the chosen casement window size complements the overall architectural style of your home. This may include considering the proportions of the window in relation to the room and the exterior fa?ade.

4. Energy efficiency: Larger windows may provide more natural light but can also result in greater heat loss. Consider the energy efficiency of the casement window and its impact on your home's overall energy consumption.

5. Budget: Finally, take into account your budget and the cost of the window size you are considering. Custom windows may be more expensive than standard sizes, so be sure to weigh the benefits against the cost.

In summary, casement windows are a versatile and popular window style that can be found in a range of standard and custom sizes. By considering factors such as room size, natural light, ventilation, architectural style, energy efficiency, and budget, you can select the perfect casement window size for your home. With a wide variety of materials, finishes, and styles available, casement windows can be tailored to suit any design aesthetic, making them an excellent choice for homeowners looking to enhance their living spaces.

Casement Window


Casement windows are the most common style of window. They feature hinged panels that swing open and closed. Casement windows are available in single panels or multiple panels. The direction a door swings, either to the right or the left, is called the handing. In addition to handing, window are identified as either inswing or outswing depending on whether they open into the house or towards the outside.


Our team of experts will work with you to develop a bespoke plan that fits your needs. We take a holistic approach to the planning process, combining our technical expertise with our knowledge of customer requirements and project constraints.


Freedom to dream "truly custom-made"

Doorwin provides one-stop solution for professional windows doors manufacturer and installation. We have been serving customers with our high quality and branded products in United States, Asia and worldwide.


This newly built private house is in Sydney, Australia. The area occupied by the fenestration system in our scheduled design drawings was up to more than 110 square meters. A wide range of design details made the perfect mix of modern aesthetics and traditional sophistication, the simulated vertical hung windows with tilt & turn opening systems in this home are absolutely breathtaking. SDLS (Simulated Divided Lites with Spacer Bar) brings some historical vintage feeling to the whole building without losing any energy saving performance. Long narrow fixed windows creating larger-than-life expenses, coupled with German high-end systems made this project stand out from the rest.

Simulated Hung Window with Tilt & Turn Openings

The client's idea was to maintain a certain vintage feel, and our aim was to meet the energy efficiency needs and standards of modern houses as much as possible while maintaining a retro design. Doorwin’s 61S simulated hung windows with tilt & turn openings is a respectful modernization of a classic architectural masterwork.

Why choose the tilt and turn opening method?

Because it generally has better air seals than sliding, single hung, or double hung window frames. Tilt and turn windows form a complete seal when fully closed, this means they are less prone to water leakage, and cold draughts and you’ll keep more of your heating indoors where it belongs. They can be opened in the upper tilt way to ventilate at a minimum opening status and are easy to clean outside of the glass; when there’s a good day, they can be opened as normal inward casement windows.

Large Energy Efficient Fixed Windows

Our well-crafted bespoke systems enhance the functionality and panoramic view of this modern house.

Huge, fixed glass walls up to seven meters long and two meters high bring great lighting and open views, making it really refreshing to the mind. Five meters high long narrow windows give the whole building a contemporary aesthetic.

Every window’s placement and shape not only add to the uniqueness of this home but also provide a more energy-saving ability for the owners.

Doorwin energy-efficient integrated glazing units feature double-pane glass, warm-edge spacers, argon gas fill, Low-E coatings, and fully tempered glass, they can not only create a comfortable and natural indoor environment but also save electricity bills and heating bills of more than 100 USD for the owner, it’s a real bargain compared to choosing a regular glazing set.

Custom Designed Thermal Break Aluminum Entry Door

Aluminum Door offered an air of uniqueness and elegance to a home. With their luxurious patterns and beautiful finishes, it provides this house with a bounty of aesthetics and security. Aluminum entry doors allow you to resist any weather extremes, corrosion, and pests. So aluminum is one of the most resilient and durable materials you can select for front doors considering the price/performance ratio.

With pieces of double panes, and Low-E tempered glass. The door provides a good insulation performance.

Custom Designed Grilles and Transom

Divided lite windows and doors offer unique architectural solutions for buildings without compromising energy efficiency or aesthetics. Doorwin provides multiple muntin and glass options to customize your divided lite windows and doors. Further customization is available with a variety of colors and materials, creating an infinite number of design combinations to best suit your style.

In this project, we use SDLS (simulated divided lites with spacer bars), these bars permanently adhere to both sides of the glass, and spacer bars are installed between the glass, this is the most energy-efficient way to create the look of classical décor grilles. The windows in the bathroom bedroom and study have an Arch Transom Design, making these rooms, which are often used by the owner, have some traditional aesthetics.

BTW, Doorwin offers free design assistance, so if you need a custom design like this one, contact us right away and we will provide you with the most aesthetically and functionally pleasing design solution.

German Imported Hardware System

For windows and doors, hardware is as important as the engine is to the car. The continuous technological innovation of the European hardware industry has strongly promoted the performance improvement and functional innovation of windows and doors. In this project, Doorwin uses Hoppe™ multi-point locks, hinges, and handles from Germany.

Multi-point lock systems provide not only the burglar-resistance but also a tighter compression seam, making the window keeps good energy-efficient performance. Together with Technoform Bautec’s insulation edge bond and sealant strips, these make up our products' top insulation and energy-saving performance.

Save Your Money On Installation Costs

We have several international patents to reduce clients’ labor costs, such as our unique flanges and assembly type tubular design, which is different from the other products on the market. What sets us apart among Chinese counterpart is that all our products are equipped with nail fin structures for quick and easy installation. Labor costs during installation may exceed of the window and door price, therefore, our exclusive patent allows users to not only get a significant increase in installation efficiency, but also greatly reduce the labor cost of window and door installation. A cost that may bring you unexpected savings that far exceed the price difference you may care about now.

Free Design Assistance

With our own expertise, we provided the no-cost design development and contract documentation with CAD & BIM drawings, including elevation, details about the project, and installation help.

Before production, we will provide accurate sample drawings, which will clearly show the cross-sectional pattern, size, opening method and direction, pattern of the warm spacer, and the installation nodes. We will not go into production until you have signed off on the drawing to ensure that you receive a final product that meets the exact requirements of your project.

About Doorwin

Doorwin's professional packing system guarantees all products are delivered safely and without any damage. We apply a four-point packing system. Firstly, adhesive plastic film is applied on interior wood frames and exterior aluminum frames to avoid scratches on the surface. Then, a paper board is applied after we apply air bubble film surrounding the whole windows/ doors to avoid any destruction or clash. Lastly, we place them into a durable non-fumigation plywood crate to avoid any possible damage during transportation.

With years of experience shipping our products worldwide, we could guarantee to ship our products to their final destinations intact and without any damage.

About Doorwin Factories

Doorwin is one of the most professional window & door manufacturers are known for its great customized products. In Doorwin, a variety of colors, styles, and sizes of products are available to meet the client’s unique requirements. We own three ISO9000-certified modern factories in China. With a factory area of 20,000 m2 and a production capacity of 100,000 m2 per year. Doorwin Group has the scale to ensure timely delivery and the flexibility to reduce manufacturing lead times to as short as 18 days.