Casey from SWISCO responded:
February 23, 2012
The S351-26 with stamp option 2520 is designed to hold a window sash weight range of 9 through and including 15 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. |
Casey from SWISCO responded:
February 23, 2012
Hi Eric,
The 2530 stamp option is the next weight range; it will carry 15 through and including 19 pounds. |