series 190 coil

A quick learner from Smyrna, Tn says:
March 1, 2021
I have the pella windows and the coils broke on one of them. The coil is marked with a 10 and is bronze 1/2" wide. Numbers dont match the numbers you show on your site. can I get theses coils or comparable?
Thumbnail of the uploaded file named wdw coil 2.jpg
Thumbnail of the uploaded file named wdw coil.jpg
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Casey from SWISCO responded:
March 2, 2021

Hello,

This looks like our 15-177 shoe, which is designed to be used with the Series 152 spring. We do not have a 10-pound strength option for the S152, but you can use two of the S152-5 on each side to support a 20-pound window sash. Thank you!
Coil Balance Shoe, Slate Blue
Coil Balance Shoe, Slate Blue
15-177
$3.47
5 lb Series 152 Coil Balance
5 lb Series 152 Coil Balance
S152-5
$4.80
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