In order for your gliding window sash to open and close smoothly, the sash must be properly adjusted. Adjusting your gliding window sash will keep your window working smoothly and may also resolve any current operational issues. To determine if gliding window sash adjustments are needed, use the instructions below to check the reveal of your window.

Checking the Reveal & Adjusting Window Sash

A properly adjusted gliding window sash will have an even reveal.

Open the window sash to within one inch of the side jamb.

Check for a uniform opening from top to bottom.

If the gap is uneven, you will need to adjust the front or back glide up or down until the window sash is square in the frame.

Gliding Windows with an Adjustable Window Sash

The (4) vintages of gliding windows with an adjustable window sash are listed below. To adjust your gliding window sash, follow the instructions provided in the article below that corresponds with your window vintage:

100 Series Gliding Windows: Andersen® 100 Series gliding windows will have a Product ID sticker in the upper frame to help identify the window. The rollers may be adjusted by following the steps in the following guide: Sash Adjustments for 100 Series Gliding Windows (2008 - Present).

200 Series Gliding Windows: Andersen® 200 Series gliding windows do not have an adjustable window sash.

Gliding Windows Pre-1952: Gliding windows manufactured prior to 1952 or that have single-pane glass will not have an Andersen® Glass Code. To determine your gliding window vintage and glass type, see How to Find Your Product's Manufacturing Date.

Sash Adjustments for 400 Series Gliding Window (1991- Present)

Sash Adjustments for Perma-Shield® Gliding Window (1971-1992)

Sash Adjustments for Primed Gliding Window (1940-1971)

©2024 Andersen Corporation. All rights reserved.