This series 373 channel balance also known as a block and tackle balance has a 15" long metal channel and is for a non-tilt window. The channel's width measures 9/16" but is considered 1/2" in the trade. This balance comes fully assembled with a 15-002 shoe and a 19-025 top attached.
|Stamp Option ||Sash Weight Range|
|1410 ||4 to 6 lb |
|1420 ||6 to 10 lb |
|1430 ||10 to 12 lb |
|1440 ||12 to 13 lb |
*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.