Lauren from SWISCO responded:
April 16, 2024
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! |