Accessory to channel balance

A quick learner from 34205 says:
November 22, 2021
Hello. I've recently ordered some 351 channel balances and discovered one window has broken the piece that the balance sets into. The pic shows an undamaged one. Can you help me with selecting the part?

Thank you!
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Casey from SWISCO responded:
November 29, 2021

Hello,

It's tough to be sure without knowing the exact dimensions and seeing your top sash guide uninstalled, but you can start by comparing the specifications of the 18-188 to yours. Let us know if you notice any discrepancies and we can go from there. Thank you!
5/8" Top Sash Guide
5/8" Top Sash Guide
18-188
$1.44
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