tilt window balancer string broke

Question

On one side of my window the string broke on the balancer.  i pulled it from the tilt window and it shows number BSI 34c stamped on the metal.

Bob · Accepted Answer

If the metal channel is 34" long, then this appears to be an S795-34 to me, with a stamp option of 34C. The T-Lock Shoe that comes installed by default with this balance is our 15-195 with the closed cam. There is also an open cam version of this shoe, the 15-195B. Open Cam simply means that the shoe has no 'back wall', and that you can see through the back of it. I can't tell from this photo which you have, but if you need the 15-195B you can purchase it separately and swap the shoes out. It's a very easy process, as shown in the video below.