If your Andersen® product has interior removable grilles that look bowed or warped, you can typically straighten them.
Note: Some degree of bowing or warping is normal and will not affect the grille's performance.
Straighten a Bowed or Warped Interior Removable Grille
This article will walk you through straightening a bowed or warped interior removable grille.

Interior Removable Grille
Tools and Supplies Needed
- Heavy, level object (for example, a large book or cast iron pan)
Let's Get Started
Straighten Interior Removable Grilles
- Remove the interior grille.
- Lay the grille on a flat, clean surface.
- Completely cover with a level weight.
- Leave the weight on for a few days, preferably 48 hours, in a warm area with sunlight exposure.
Note: Successful removal of the bowing and warping will depend upon temperature, humidity levels, and the degree of the bow.
Resolution
If that resolved your concern, you're all set! Your grilles should be straightened.
If the steps above did not resolve the concern, Contact Andersen® Windows and Doors for assistance.
Similar Symptoms
Loose or Damaged Interior Grille
If your grille is loose or has a minor break, it can typically be repaired. For instructions, see Repair Interior Removable Grilles on Andersen® Windows and Doors.
©2026 Andersen Corporation. All rights reserved.