Looking for 16 of these pieces if you can find tem

A contractor from Colorado says:
I'm looking for some older sliding window parts... I believe these to be about ten years old. Please let me know if you can find anything thanks.
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Jasmine from SWISCO responded:

Thanks for reaching out! The clip shown in your photos is the 15-181 double support detent clip. This is typically used along with the 15-180 coil balance shoe. Look over the dimensions for the shoe below and compare them to an existing, undamaged shoe. See if these are the right fit for your window.

Alternate image for 15-180
Alternate image for 15-180

These pieces of hardware are compatible with 15-182 coil bushing and the Series 190 Coil balance spring. To confirm the right replacement springs for your window, you'll need to look for any stamps/markings on the metal coil.

If there are none, you'll need to obtain the exact window weight and divide it by the total number of coils. Then on the list of balances the first number after the 190 will be the weight you'd need to select.

(For example, if your window ends up weighing 20lbs, you'd need (4) 5lb coils. So you would need the S190-540.)

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