Two of my windows need replacement channel balances. The windows are dual glazed, aluminum, single hung, about 30 years old.
Window 1: Channel is 1/2 inch wide x 34" long. Window is about 15 lbs. The channel has the following imprint: 3320A B.S.I. (A is upside down - see photo).
Window 2: Channel is 1/2 inch wide x 22" long. Window is about 15 lbs. Channel has the following imprint: 2130V B.S.I. (V is upside down - see photo).
The photos of the entire thing is the 34", but the shorter one is exactly the same.
Please send link of what I need to order or let me know should you need more information or photos. Thank you.
Tom