How to Choose the Right Window Size

Choosing window size for your window replacement project isn’t rocket science. Windows that are readily available on the market have standard sizes that fit the typical openings in homes. A window’s size notation combines the width and height — with the first two numbers representing the width and the last two numbers representing the height. This means that a 2426 window is 2 feet 4 inches wide and 2 feet 6 inches long. Take note that standard-sized windows usually have a ½-inch allowance to fit standard openings.

Standard-sized windows cost less than custom windows. But if your existing window openings do not match the standard window sizes, it’s best to have your windows customized instead. 

To give you an idea of the standard sizes for different window styles, here’s a quick guide from STL Windows Direct.

Double-Hung Windows

Double-hung windows typically have a 24- to 48-inch width and a 36- to 72-inch height. Double-hung windows are a common choice for direct windows replacement. Their standard sizes fit most openings in bathrooms, kitchens and living rooms. 

Picture Windows

Picture windows are often used to offer an uninterrupted view of the outside and maximize natural lighting. Their standard widths are 2, 3, 4, 6 and 8 feet. Their heights can range from 1 to 8 feet.

Sliding Windows

Sliding windows are available in widths of 36, 48, 60, 72 and 84 inches. Their standard heights are 24, 36, 48 and 60 inches. Sliders are great for small spaces or areas where opening a window outward is impossible.

You can always count on STL Windows Direct to provide you with high-quality window installation services. We also offer Smart 365 Innovations windows, which meet high industry standards and boast superior energy efficiency. Call us at (314) 690-5800 or fill out this contact form to get started with your project.