window balancer and sash cam
A home owner from Winthrop WA says:
August 8, 2016
The channel balancer has 25 3 on the back and the sash cam has M513. I believe they are Milgard windows.
Tom from SWISCO responded:
August 9, 2016
Thanks for posting. Sounds like you have a 26" block & tackle balance with a stamp option of 2530. I'm afraid that's all I can tell based on your information, though. Now you just need to pick out the top and bottom fittings in order to determine the Series.
I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have.