Window springs

A quick learner from Anthem az says:
February 8, 2023
The spring unit is 29 inches long will need 2 of these
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Emily from SWISCO responded:
February 9, 2023

Hi there!

It appears you have the S351-28 or S390-28 depending on the depth of your balance's bottom fitting. You'll need to measure as shown in the image below to determine which Series is the best match for you. As for the spring strength, you'll need the 2730 option. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
28" Series 351 Channel Balance
28" Series 351 Channel Balance
S351-28
$10.97
28" Series 390 Channel Balance
28" Series 390 Channel Balance
S390-28
$10.97
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