Window balance

Question

hello I am looking to replace two balances as one is broken
I am puzzled by the 30C marking as the steel channel measures 31 inches so i am not sure whether to choose a 30 or 31 inch channel....any suggestions

Jasmine · Accepted Answer

Thanks for posting! You'll need either the S351-31 or the S390-31 to replace your balances. To determine which of these is the correct replacement match, measure the depth of the shoe.

Our 3030 stamp should work in place of your 30C stamp. Although, it may be a good idea to double check that the sash weighs between 16 to 23lbs.

Comparison of the S351 and S390 balance shoes.