Paul from SWISCO responded:
July 12, 2010
34" Series 350, 350-34, weight ranges:
3310 = 8 to 13 lbs. 3320 = 13 to 18 lbs. 3330 = 18 to 23 lbs. 3340 = 23 to 28 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. Suggested sash weights are approximate. |