Window balance replacement coil

Question

I am looking for replacement window balance coils for a 34-7 x 34-7 Yorktowne CF foam filled double hung bathroom window.  The only number I can see on the coil is #4.5 35".  There is also a patent number 4,610,108. I need 1 set of 2.

Jasmine · Accepted Answer

Thanks for writing in! Your coil balance pivot shoe looks like our 15-111. Carefully compare the measurements to your existing pivot shoe to confirm that this is the right fit.

Alternate image for 15-111

he compatible coil spring is the Series 160 Coil. You'll need the S160-4 for your spring marked with a #4.5. The compatible cover is part 15-150D.