Single coil window balance

Question

I am looking for the correct single coil window balances for a thermo tite. The front of coil cover has a "5" & "A,B,C,D,E,F" on the front. Any idea what replacement will fit?

Bob · Accepted Answer

See our 15-177 Pivot Shoe. This shoe uses our Series 152 Coil Balances. To know what spring weights to select, the only reliable stamp to go by would be on the spring itself, near the tongue. If there is none or you are uncertain, obtain the exact weight of the window sash. Give me that exact weight and I can work it out for you.