Series 152 coil supports

A quick learner from Wilmington, DE says:
I have a series 152 coil balance with a 15-175 shoe. I don't see my support hardware in your catalog. I have attached photos . My supports are approximately 1-1/4" wide, 1-7/16" Tall and 1/2" deep. What do you recommend for replacement?
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
We don't have your coil spring housing, unfortunately. Consider a substitute. We suggest the 15-150S, where the coil spring rests on top of the inside bumper. How's that sound?
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