Weight ratings for 42HD and 42TG balances

An S751-43 ribbed balance with a 42HD option can carry sashes weighing 25 through 30 pounds, while a 42TG option carries 30 through 38 pounds. These will both have to be custom made. Would you like us to do this for you? If so, please tell me how many of each you need and we can get started.

I'm afraid the manufacturer doesn't make any balances that can support that kind of weight. Are you sure you have the Series 751? Can you show us a picture of your old balance? Also, whats the stamp printed on the metal channel?

Well, that's definitely our Series 751. It's very odd that a 56" long balance has a stamp of 42HD. That only indicates a metal channel length of 43" and a sash weight of 25 through 30 pounds. I'm not sure why the manufacturer would put that stamp on that length, and on such a heavy sash to boot. Can you double check to confirm the sash weight and metal channel length you're giving me are accurate?

Ah, I see. That's definitely our S751-43, then. Unfortunately, we don't have anything that can support your sash weight. 38 pounds is the absolute heaviest sash the Series 751 was designed to carry, regardless of size. I looked through all the lengths past 43" and all of them can only carry 38 pounds at absolute maximum. The manufacturer never made anything stronger.