balance option numbers
A home owner from Gilroy California says:
October 30, 2009
what does option 2740 mean for the S350-28 balance?
Donna from SWISCO responded:
November 2, 2009
To determine the proper stamp option remove the window sash and place it on a scale.
SWISCO Series 350 balance, 28" with stamp option 2740 will carry a window sash weight range of 19 through 26 pounds.
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. Suggested sash weights are approximate.