Balance shoe spring inside 9 Lbs

A contractor from mn says:
2 1/2 long 1 1/4 wide 9 1/16 thick Fits Vetter and Traco windows Tilt Vinyl
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Jasmine from SWISCO responded:

Thanks for reaching out! The design of your housing reminds me of the Series 161 Roller-Tilt Assembly. Since yours is 9LB, you'll need the S161-09. To confirm that this is the correct replacement, carefully look over the dimensions shown below. You'll especially want to confirm the dimensions for the thickness of the housing.

Alternate image for S161-09
Alternate image for S161-09

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