Replace broken spring

Question

Help ID part for replacement of broken spring. Left Side.
PAT 5.353.548
Double hung window.

Also information on replacement of the spring.

Jasmine · Accepted Answer

Thanks for posting! Your coil balance housing looks similar to our 15-087 Coil Housing Pivot, used along with the 15-086 Tandem Coil Housing. Carefully review and compare the dimensions to those shown below to determine if these are the correct replacements for your coil housings.

Detail of 15-087

Detail of 15-086

These are compatible with the Series 180 Coil Balances. Since one of them appears to be stamped with a 6#, you'll need the S180-06. You'll need to look for a stamp/marking from the second coil to determine the other replacement coil needed for your assembly.