21" Series 350 Channel Balance

Product Code: S350-21

21" Series 350 Channel Balance
Main product image of the S350-21 21" Series 350 Channel Balance
How to replace a window sash channel balance
How to identify a replacement channel balance
Quantity Price
1-11 $8.95
12-49 $8.05
50-99 $7.61
100-249 $7.16
250+ $6.71
add $0.75
add $1.25
Product Description
This series 350 channel balance also known as a block and tackle balance has a 21" 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 15-004 shoe and a 19-002 top attached.
Stamp Option Sash Weight Range
2010 5 to 8 lb
2020 8 to 12 lb
2030 12 to 15 lb
2040 15 to 23 lb
2050 23 to 27 lb
2060 27 to 30 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 & Answers
Discussion # Of Replies Last Post Date
Replacement balancer for non-tilt windowThis discussion includes image(s). 4 May 21, 2018
Replacement balance id 2 Dec 13, 2017
Replacement plastic piece from windowThis discussion includes image(s). 2 Oct 27, 2017
Window channel non tilt 20cThis discussion includes image(s). 2 Jul 20, 2016
non-tilt block and tackleThis discussion includes image(s). 2 Sep 29, 2015
Sash weight? 2 Sep 1, 2015
Sun Air window balanceThis discussion includes image(s). 2 Oct 16, 2014
unknown stamp option 2 May 27, 2014
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