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24-331 Andersen Sash Balance, 319, 325, 331

The window is around circa 1965 and there aren't many markings on it. It does say Anderson corp. bayport minn. and a stamp on it " A 3 19 7"

I have attached a picture of what I believe is an Anderson window. So I am looking for some guidance to determine the correct part. Can you tell me how to find the sash balance for this window without taking it apart first? I just need one (right side from the inside view). Saul

Can the sash balance be identified using the numbers etched on the glass and the dimensions of the glass without taking the window apart to get the part number on the sash balance itself?

The number is either B31 or 331 followed by 1/19 1135. Only other number on it is 11600-17. Assumption is the number is 331 which aligns with one of your replacement sash springs.

I'm looking for replacement part for Anderson Window approx 40 years old...

I REMOVED ONE OF THE BROOK WINDOW BALANCE FOR AVDERSEN, THE NUMBERS ON IT DOES NOT MATCH ANY OF YOUR NUMBERS THE NUMBER ON MY BALANCE IS C7 6P23 1 74

I have one that is stamped "A 3 19 573". Can you help with this part number? THANK YOU!