To assist you with the installation of your A-Series or 400 Series replacement casement window operator(s), please see the links below.
How to Install an A-Series and 400 Series Casement Straight-Arm Operator
How to Install an A-Series and 400 Series Casement Split-Arm Operator
To determine your operator type, see Operator Types Used on A-Series and 400 Series Casement Windows.
Split Arm Operator
Straight Arm Operator
To identify your window Series, see Identify My Andersen® Window and Patio Door Worksheet.
To determine your window Vintage, obtain the Andersen® Glass Logo 
. This code contains information to help you determine the date your casement window was manufactured.
©2024 Andersen Corporation. All rights reserved.
