Measuring For Pocket Replacement Windows

Measure the window s width in three places top middle and bottom of the window.

Measuring for pocket replacement windows.

This measurement should be between 3 5 inches and 5 5 inches. Standard window sizes vary but you can be sure that replacements you order will have 90 degree corners. One at the left side one at the center and one at the right side of the window. To check your windows are in square alignment.

If the pocket is outside of this range modification to the pocket may be needed and you should call an expert. Follow the manufacturer size recommendations 2. This is the pocket the sill will fit into. Measure from the high point of the sill of your window the surface closest to the inside of the window to the top of the window opening.

Use the smallest of these three height measurements to order the window. Replacement windows are sold in a standard thickness to fit inside the 3 1 4 in. Record the shortest measurement this ensures that the new window will fit. Measuring for replacement windows begins with determining that the corners of the existing window frame are square.

With helper set window into opening to check fit then remove it. Again you ll need to take three measurements each extending from the top horizontal board. Tips for measuring windows. We ll show you how to measure your existing windows to find the size you need.

New pocket replacement window should be about 3 16 to inch shorter than smallest measurement in opening. Down the left side right side and the middle. Use the smallest of the measurements to determine the width that surrounds the window. Measure the height from the head of the window top fixed frame piece to the windowsill bottom fixed frame piece as with the width take three measurements.