Andersen® A-Series awning and casement windows use a beige, compressible bulb-style weatherstrip on all four (4) sides of the frame, which you can cut to size for replacement.
Install Replacement Frame Weatherstrip on Andersen® A-Series Casement or Awning Window
This article provides you with resources for ordering and installing a replacement frame weatherstrip on an A-Series casement or awning window.

Frame Weatherstrip
Let's Get Started
1. Order Replacement Parts
To order a replacement frame weatherstrip for A-Series casement or awning windows, Contact Andersen® Windows and Doors.
2. Installation
For written instructions on how to install a replacement frame weatherstrip, see the Weatherstrip Replacement Guide for Andersen A-Series Casement, Awning, and Venting Transom Windows (9011006). 
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