Milgard window balancer
A contractor from California says:
April 12, 2016
This is from a neighbors window. I'm going to replace balancer for her. I took this picture without measurements. Thought I would be able to find part based on this. Please let me know if this is enough. I do know it's 1/2" wide.
Tom from SWISCO responded:
April 13, 2016
Thanks for posting. Looks like you have a 30" block & tackle balance with a stamp option of 2940. 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.