Coil for Pivot Shoe 15-215

Hi Rakesh. The 15-215 works with our Series 140 Coil Balance systems. Unlike most of our coil balances, the Series 140 comes as complete sets rather than as individual parts. That includes replacement pivot shoes, which means the 15-215 shoes you bought might be redundant now--apologies for any inconvenience! Look for stamps on the coil balance systems to determine the spring weights you need. If there are none or you are uncertain, obtain the exact weight of the window sash and then divide it in half. That should tell you the spring weights you need for the systems on both sides of the window sash.