Napco vinyl replacement window

A contractor from Sayville, NY says:
January 30, 2020
Looking to see if you would have a coil balance spring assembly that would fit Napco vinyl replacement window
See photos attached. Thank you
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Bob from SWISCO responded:
January 30, 2020

Thanks for posting. Your pivot shoe looks like our 15-175. This shoe is compatible with our Series 152 Coil Springs. To know what spring weights you need, look for stamps on the coil springs. If there are none, or if you are uncertain, weigh your window sash. Give us that exact weight, and we'll work out what you need. 
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Support Barrel
Coil Support Barrel
15-145
$0.49
#8 x 3/8" SS Pan Head Philips Screw
#8 x 3/8" SS Pan Head Philips Screw
33-072
$0.30
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