Commercial window gasket

A professional from USA says:
We are using the 58-134 for replacement gaskets. Can you provide a product code for similar gaskets that are 10% and 20% smaller? I'm hoping to find a similar gasket with the same 9/32" base but a smaller bulb.
Let me know if that's possible.
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Tom from SWISCO responded:
I'm not sure if we can get an alternate size for the 58-134, but we will certainly try our best to research something. Can you give me the exact measurements you need, using the 58-134 as a reference?
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