Casey from SWISCO responded:
July 27, 2020
Hello, It looks like you may need our Series 377 channel balance. There should be identical balances on both sides of the window. I would recommend that you weight the window sash to see which would work better for both replacement balances: 2940- 23 to 28 lbs 2950- 28 to 32 lbs This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Take a look at the specifications on our S377-30 product page to determine what will work best for your window. Thank you! |
Casey from SWISCO responded:
July 28, 2020
You would not split the weight of the sash between the two balances. Both balances need to be able to support the full weight of the sash, so you'll want 2940 options for both balances to support a 25-pound sash. |