18" Series 390 Channel Balance

Product Code: S390-18

Product Description
This series 390 channel balance also known as a block and tackle balance has a 18" 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 15-001 shoe and a 19-002 top attached.
Stamp Option Sash Weight Range
1710 5 to 8 lbs
1720 8 to 12 lbs
1730 12 to 14 lbs
1740 14 to 17 lbs
1750 17 to 20 lbs
*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
18" 17 B balancer 2 Feb 22, 2017
Channel Balance replacementThis discussion includes image(s). 2 Jun 15, 2016
1720 Window channelsThis discussion includes image(s). 2 Jan 7, 2015
need new channel balancersThis discussion includes image(s).This discussion includes video(s). 6 Oct 18, 2013
Help me replace my Channel BalanceThis discussion includes image(s). 7 Jun 6, 2013
Milguard Windows BalancesThis discussion includes image(s). 10 Apr 26, 2013
Help choosing the correct channel balanceThis discussion includes image(s). 9 Oct 19, 2012
18" Channel Balances with stamp 17 SThis discussion includes image(s). 6 Dec 5, 2011
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