Window Balance Identification

Hello. This looks like a Series 795 Channel Balance. Measure the length of the metal channel, not including the T-Lock Shoe at the bottom, to determine the balance length needed. Look for a stamp code on the metal channel to determine the stamp option needed. The Series 795 comes with the 15-195 1-1/4" Closed Cam T-Lock Shoe already installed, which appears to match what you have. You'll also want to make sure that your balance installs at the top of the window track with a screw; some balances similar to this use a hook instead. Let us know if that's the case, or if you have any other questions.