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Contractor from San Francisco,ca

Sep 30, 2025 8:47 pm

Milgrad window crank and sliding arm is corroded. I need to order both .

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2 Replies

Lauren from SWISCO

Oct 7, 2025 8:49 am

Hello, thank you for posting,

Your operator could either be the 39-253RB and 39-253LB or the 39-439B and 39-438B. The main difference is the attachment at the end of the straight arm.

Please review the video below to confirm the correct option for your window. I have also related compatible cover and handle parts. Let us know if you have any questions!