SWISCO - The Replacement Hardware Authority

31" Series 377 Channel Balance

Product Code: S377-31

Product Description
This series 377 channel balance also known as a block and tackle balance has a 31" 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 15-005 shoe and a 19-018 top attached.
Stamp Option Sash Weight Range
3010 7 to 12 lb
3020 12 to 16 lb
3030 16 to 23 lb
3040 23 to 28 lb
3050 28 to 32 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.
Good Idea!
Balances are sold individually, however, it is a good idea to replace both window balances at the same time. Pairing a new balance with an old one would cause the new balance to wear out faster.
Helpful Tip!
The stamp option represents the strength of the channel balance. Locate the stamp on your channel balance. If your stamp does not match any of the stamp options available or you are unsure of which stamp option you should choose: ask our experts for help.
Customer Questions & Comments
Discussion # Of Replies Last Post Date
Aluminum single hung non tilt 20+ years oldThis discussion includes image(s). 2 Oct 19, 2016
help with balanceThis discussion includes image(s). 4 Feb 6, 2014
channel 3020This discussion includes image(s). 2 Mar 22, 2013
Replacement balance -- #377 31 "?This discussion includes image(s). 9 Nov 20, 2012
replacement of channel balancesThis discussion includes image(s). 3 Apr 25, 2012
Matching a3030 w/imagesThis discussion includes image(s). 2 Apr 23, 2012
Channel Balance, sash guide, top and shoe 2 Nov 3, 2010
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