Window coils

Question

This is from a Jen weld window. Double hung tilt in. The spring is 1/2" like the 152 series but the plastics match the 171 series. The spring has an F stamped near the screw.

Bob · Accepted Answer

Thanks for posting. This looks like an 15-175 Pivot Shoe to me, which uses our Series 152 Coil Balances. A stamp of 5 translates to 6 in our system, so it seems like you need an S152-6 6 lb spring. Let me know if you have any further questions.