I placed a table with a shipping scale on it, and lowered the sash onto it (I hope this give an accurate reading) and it weighed in at 35lbs.
15-001 is the bottom shoe which most closely resembles the one that I currently have.
Great! Based on your specifications, take a look at the S395-30 with the 2965 option. Two balances with the 2695 option can carry a window sash weight range of 35 through 39 pounds.
Tom,
Does this mean that the balances which were in the windows until now were rated too high? Or will these new 2965 balances not perform as well?
Looking at the original stamp on your old balances, I believe the capacity was for a 32 pound sash.
Now, the 2965 is designed to hold 35 through 39 pounds, so these new balances are stronger. We can go lower if you prefer, but we recommended the 2965 option based on the fact that your sash weighs 35 pounds.