Hi Donna,
The window weighs about 30 lbs. weighed on a bathroom scale. so would the 2960 still be the right choice?
Thanks...Craig
Hey Craig,
Unless you think your scale is not correct, go with the 2950 stamp option. The 30" Series 390 with stamp option 2950 will carry a window sash weight range of 28 through and including 32 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.