28" Series 770 Balance

Product Code: S770-28

Product Description
Series 770 replacement 28" block and tackle channel balance system for a tilt window. Sold individually.
Stamp Option Sash Weight Range
B 12 to 18 lbs
C 18 to 23 lbs
D 23 to 28 lbs
E 28 to 32 lbs
F 32 to 36 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
Unique 27DThis discussion includes image(s). 8 Oct 12, 2017
Channel Balance for Milestone Single Hung Series 2000This discussion includes image(s). 3 Sep 29, 2017
Window sashThis discussion includes image(s). 2 Sep 15, 2017
Cannot close the window, maybe wrong option? 4 Sep 15, 2017
Side load window balancesThis discussion includes image(s). 4 Aug 17, 2017
(11/06) UNIQUE 27-D-40 tilt window channel balance This discussion includes image(s). 4 May 11, 2017
Replacement Window Banances - Republic Windows - Enhancement Window Syatem 7 May 5, 2017
Channel window balanceThis discussion includes image(s). 3 Apr 19, 2017
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