2780 BSI GT Window Balance

Question

This balance is a 1/2 in channel, 28 in length, with the 1 in 15-005 shoe. So, it looks like the Series 380. However, I do not see an option for a 2780 stamp weight (over 40lbs?). Is this rating available? -- Thanks

Tom · Accepted Answer

That is a very strong spring. Can you confirm the exact weight of the sash? That will help us determine if this is something we can custom make for you.