Replacing 380 Channel Balances for a 30lb sash
A home owner from Jacksonville, FL says:
December 26, 2011
Need to order two new channel balances. They are 25" 380, but not sure about stamp. It says 4 9 (small something) then looks like BSI. The window sash weighs 30 lbs. Thank you.
Donna from SWISCO responded:
December 28, 2011
We can have a custom balance made, you have two options for a S380-25 balance for a 30 pound sash
2560 stamp will carry a window sash weight range of 28 through and including 30 pounds.
2565 stamp will carry a window sash weight range of 30 through and including 33 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.
Fill out this form to get started: http://www.swisco.com/spor/channel/Series-380-Channel-Balances