block and tackle window guide

A quick learner from New Jersey says:
June 20, 2023
need model number to order ......21" long - 1/2" wide.
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Casey from SWISCO responded:
June 22, 2023

Hello,

Take a look and compare the specifications of the S370-21 channel balance to your assembly. If it's a match, you'll also need a 2020 strength option based on your stamp code. Thanks for posting! 

Close up view of the S370 balance top.
Close up view of the S370 balance top.

Close up view of the S370 balance shoe.
Close up view of the S370 balance shoe.
21" Series 370 Channel Balance
21" Series 370 Channel Balance
S370-21
$9.67
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