Replace broken spring

PAT 5.353.548
Double hung window.
Also information on replacement of the spring.



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.
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.