Casey from SWISCO responded:
January 24, 2020
Hello, I can't say with certainty what pivot shoe you need while it's still installed but I suspect that either the 15-178 or 15-188 would work for you depending on which thickness matches your original. Based on the information you've provided about your balance, the S900-27 looks like a strong contender. Keep in mind that your balance appears to have a yellow tip but the sash weight you provided (21.4) would fall into the weight range for a red tip. You may want to double-check to make sure you're replacement have the appropriate tension to support your sash. Color Tip Sash Weight Range Red 10 to 22 lbs Yellow 24 to 34 lbs |