Casey from SWISCO responded:
May 25, 2011
Hello Trong,
The balance fitting combination of 19-002 Top and 15-004 Shoe is used on SWISCO Series 350 Balances. For the sashes that weigh 24 pounds, 30" Series 350 Balance with stamp option 2940 will carry a window sash weight range of 23 through 28 pounds. For the sash that weighs 35 pounds a custom balance order will need to be placed. There are two options to choose from: 30" Series 350 with stamp 2960 will carry a window sash weight range of 32 through and including 35 pounds. 30" Series 350 with stamp 2965 will carry a window sash weight range of 35 through and including 39 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. |