window channel marked 1510

Question

this measures 16". this is from a metal single hung window.

Jasmine · Accepted Answer

Thanks for posting! Your balance could be either our S351-16 or the S390-16 with a 1510 stamp. To confirm which series you have, you'll need to confirm the depth of your bottom shoe. It should either be 1" or 1-1/8". You can use the diagram below for reference.

Comparison of the S351 and S390 balance shoes.