Window Roller

Question

The roller is 4" tall and the width is 1 15/16.
It also has a u.s pat 7,980,028
and springs pat 8,181,396

Bob · Accepted Answer

Thanks for posting. This looks like the 15-102 Double Side Load Carrier to me. This system works with Series 145 Coil Balance springs, sold separately. Let me know if you have questions.

Alternate view of 15-102