Window balance 24hdb

Hello,

It's tough to be sure based on a damaged part but your photos resemble the S751 channel balance. To confirm, take a look and compare the specifications of the 15-014 knife lock shoe that comes with these balances to an intact part from one of your windows. 

Dimensions for 15-014

I would also recommend double-checking the length of the metal channel since the S751-25 offers 24HD strength options to match your stamp code. If your length measures exactly 24" long, you'll need to weigh your sash to determine which option you'll need. There is a chart on the product page of the S751-24 that explains how to choose your option based on the sash weight. We've also related the S-clips that we carry on this page if you need those as well. Thank you. 

How to measure the length of the Series 751 channel balance.