Standard Window Frame Sizes: Common Dimensions From 24×36 to 36×60 Inches

Standard window frame sizes for single- and double-hung windows run 24 to 48 inches wide and 36 to 72 inches tall. A popular size is 2840, or 32 x 48 inches.

Sizes vary by window style, manufacturer and whether the unit is standard or custom. This guide covers the size chart, size codes, rough opening and how to measure.

How to Measure Window Frame Size

How do you measure the frame size of a window? First, check if the opening is square. Measure the diagonals from corner to corner. A gap of more than 1/4 inch means it is not square.

Then measure the width at the top, middle and bottom. Measure the height at the left, center and right. Record the smallest numbers, then measure the depth from interior trim to exterior trim.

Standard Window Frame Size Chart (Width x Height)

Window Size Codes Explained

What do window size codes mean? Many makers use a four-digit code. The first two digits give the width in feet and inches. The last two give the height.

For example, 2852 means 2 feet 8 inches wide and 5 feet 2 inches tall, or 32 x 62 inches. Check if a label shows the unit size or the rough opening.

Single-Hung Window

24–48″ W × 36–72″ H

Width24–48 in

Height36–72 in

Double-Hung Window

24–48″ W × 36–72″ H

Width24–48 in

Height36–72 in

Casement Window

14–36″ W × 30–78″ H

Width14–36 in

Height30–78 in

Sliding Window

36–84″ W × 24–60″ H

Width36–84 in

Height24–60 in

Picture / Fixed Window

24–96″ W × 24–62″ H

Width24–96 in

Height24–62 in

Awning Window

16–48″ W × 24–84″ H

Width16–48 in

Height24–84 in

Standard Window Frame Sizes by Type

Single and Double-Hung Window Frame Size

Single-hung and double-hung windows measure 24 to 48 inches wide and 36 to 72 inches tall. Common codes are 2030, 2840 and 2852.

Is 32×48 a standard window size? Yes. It is the 2840 code, one of the most common sizes.

Casement Window Frame Size

Casement windows are narrow and tall. Widths run 14 to 36 inches, and heights run 30 to 78 inches.

Common codes are 2436, 2640 and 3060. Some charts list casements up to 48 inches wide.

Sliding Window Frame Size

Sliding windows are wide and short. Widths run 36 to 84 inches, and heights run 24 to 60 inches.

Common codes are 3030, 5030 and 6040. They suit wide wall openings.

Picture Window Frame Size

Picture windows are fixed, so they do not open. Widths run 24 to 96 inches, and heights run 24 to 62 inches.

Common codes are 3020, 4050 and 6040. Some charts list fixed units up to 96 inches tall.

Awning Window Frame Size

Awning windows hinge at the top and open outward. Typical ranges are 16 to 48 inches wide and 24 to 84 inches tall.

Common codes are 3020, 4024 and 5030.

Window Frame Material Thickness

Frame depth changes with the material. Wood frames average 10 to 20 mm. Aluminum frames run 16 to 26 mm. uPVC and vinyl frames run 20 to 28 mm.

Stock screen frames often use thin aluminum extrusions, such as 5/16 x 5/8 inch. Check the frame depth against your wall thickness.

More Post: Standard Door Dimensions

Questions

What are the standard sizes for window frames?

Standard window sizes depend on the window type and manufacturer. Hung windows commonly range from 24 to 48 inches wide and 36 to 72 inches tall. Sliding windows can range from 36 to 84 inches wide.

What are the typical sizes of window frames?

Residential window frames vary widely, with sizes ranging from about 14 to 96 inches wide and 24 to 84 inches tall. The available dimensions depend on the window style, manufacturer, and building requirements.

What are the standard window frame sizes in inches?

Common nominal window sizes include 24 × 36, 32 × 48, 32 × 62, 36 × 36, 36 × 72, 60 × 36, and 72 × 48 inches. Corresponding size codes may include 2030, 2840, 2852, 3030, 3060, 5030, and 6040. Always confirm the manufacturer’s actual unit dimensions.

Is 32 × 48 a standard window size?

Yes, 32 × 48 inches is a commonly available nominal window size. It is often identified by the size code 2840, meaning 2 feet 8 inches wide by 4 feet tall. Actual window dimensions can be slightly smaller.

What are the most popular window sizes?

Common window sizes include 2840 (32 × 48 inches), 3030 (36 × 36 inches), 5030 (60 × 36 inches), and 6040 (72 × 48 inches). Availability varies by manufacturer and window style.

How much bigger should a window frame be than the window?

The rough opening is often about 1/2 to 3/4 inch larger than the window unit overall, but the required clearance depends on the manufacturer’s installation instructions. This space allows for shimming, leveling, and sealing.

What is the rough opening for a 48-inch window?

For a window unit that is 48 inches wide, the rough opening may be about 48 1/2 to 48 3/4 inches wide. Apply the manufacturer’s specified clearance to the height as well, rather than assuming every window needs the same allowance.

What are different types of window frames?

Common frame materials include wood, aluminum, and uPVC or vinyl. Popular window styles include single-hung, double-hung, casement, sliding, picture, and awning windows.

How do you measure the frame size of a window?

Measure the width at the top, middle, and bottom, then measure the height at the left, center, and right. Use the smallest measurements when checking an existing opening. Measure the depth too, and check that the opening is square. For replacement windows, follow the manufacturer’s measuring instructions.