Window balance

Quick Learner from Oregon
Hello. This balance is from an epi window, installed in about 2002. The metal channel is 20 inches long, 9/16 wide and 5/8 deep. The only stamp is included in the photos. I need 4. Thanks for your help
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Jasmine
Jasmine from SWISCO
SWISCO
Expert

Thanks for posting! Your channel balance appears to be either the S380-20 with a 1" shoe or the S385-20 with a 1-3/32" shoe. To determine which of these series is the correct one for your window, you'll need to confirm the depth measurement of your shoe. Take a look at the diagram below for reference.

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.

I'm unable to cross-reference the stamp from your balance, unfortunately. That said, to determine the stamp option needed for your replacements, you'll need to obtain the exact weight of your sash. There is a chart below the product description of the balances that lists the weight range each stamp option can hold.

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