Casement Window Size Guide

Casement windows are a popular choice due to their sleek design, excellent ventilation, and unobstructed views. And chances are, there is a standard size that will work for your home! Below, you will find our comprehensive guide to casement window size.

Casement Window Size: Standard and Custom

Casement windows come in a range of standard sizes to fit various window openings. Common casement window sizes include:

• 1’ 7” wide by 1’ 4” high.
• 1’ 7” wide by 2’ 5” high.
• 2’ 3” wide by 2’ 3” high.
• 2’ 9” wide by 2’ 9” high.
• 3’ 5” wide by 2’ 5” high.

Common casement window widths typically start at 2 feet (24 inches) and increase in 2-inch increments, such as 28 inches, 30 inches, 32 inches, and so on. The height of casement windows can vary but often starts around 4 feet (48 inches) and increases in 6-inch increments, such as 54 inches, 60 inches, 66 inches, and beyond.

Keep in mind that your casement window cost will go up the larger and/or more custom it is.

You can learn more about sizing in general by reading our standard window sizes guide.

Smallest Casement Window Size

The smallest casement window size available may vary depending on the manufacturer and customization options. However, standard casement windows can be as small as 2 feet (24 inches) wide and 4 feet (48 inches) high.

Smaller custom sizes may be available for specific applications or architectural designs.

Largest Casement Window Size

Large casement windows can be a striking architectural feature, providing abundant natural light and views of the outdoors. The largest casement window size may also vary based on the manufacturer and engineering limitations, but it can reach up to 8 feet (96 inches) in width and 6 feet (72 inches) in height or more.

For expansive window openings, you can consider combining multiple casement window units to create a dramatic wall of glass.

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How Do I Figure Out Which Size Casement Window Would Work Best for My Home?

When homeowners are considering buying casement windows, understanding the various aspects related to casement window sizes is crucial. Here are some important factors to consider:

1. Egress requirements. If the casement windows are intended for bedrooms or basement living spaces, ensure they meet egress requirements specified by local building codes. Egress windows must provide a minimum clear opening area for safe escape during emergencies.
2. Ventilation needs. Consider the ventilation needs of the room when choosing casement window sizes. Larger casement windows provide better airflow, making them suitable for areas like kitchens or living rooms.
3. Aesthetics and design. The size of the casement windows should complement the architectural style of your home. Having windows that are too small or too big will throw off the balance, look, and feel of your home.
4. Interior and exterior clearance. Casement windows open outward, so consider the exterior space available outside the window and the interior space where the sash will swing when fully opened. This is especially important for windows placed near walkways or landscaping.
5. Energy efficiency. Larger casement windows may offer more natural light, but they can also impact energy efficiency. Consider using energy-efficient glass and frames to maintain thermal performance.
6. Window placement. Decide on the best placement for your casement windows to maximize views and natural light. If you have an existing window there, are you happy with the size? Do you wish it was larger so that you could have more light or better ventilation?
7. Frame material and weight. The material you choose for the window frame can affect the weight of the casement window. Choose a frame material that fits your budget and style preferences while ensuring it can accommodate the desired window size.

The Bottom Line on Casement Window Size

When considering casement window size, remember that while they come in various standard dimensions, custom sizes can also be created to fit specific window openings.

When shopping for casement windows, prioritize the right size, quality, and energy efficiency, and be sure to work with a professional installer to guarantee a seamless and secure installation. Modernize can match you with up to four window contractors in your area so you can get quotes easily.

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