Replacement window spring

Hello, thank you for posting,

Please review the style and dimensions of the 15-177 pivot shoe that is compatible with the Series 152 coil springs. 

Alternate image for 15-177

The coil springs should be stamped with a number on the metal that indicates the weighted option needed. If there are no markings, please provide the weight of the sash to move forward.

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