Top cover for spiral balance.

A home owner from Denver, CO says:
Looking for the Swisscom part number for the black cover that sits over the top of spiral balance in my double hung tilt window. The spiral balance is equivalent to S600-29. The dimensions of the black cover are about 3/4 in Width x 1 7/8 in Length x 9/16 in Depth.
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Tom from SWISCO responded:

I don't believe we sell the exact stop you show in your photos. Our 55-046 is of similar design, but not exact. Look it over and see if you think this would be usable on your window.

Dimensions for 55-046
Dimensions for 55-046

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