paradigm double hung window

Hello, thank you for posting,

Your balance resembles the 15-177 pivot shoe that is compatible with the Series 152 coil springs. Please review the dimensions below to confirm a good fit!

Alternate image for 15-177

It appears the coil spring is stamped with a '7'. Please see the S152-7 that can support 7 pounds of weight. Together with the other side, the total sash weight should be 14 pounds.

Also see the 15-143 coil bushing, 15-144 bushing cap and 15-145 support barrel. Let us know if you have any additional questions!