29" Series 370 Channel Balance

Product Code: S370-29

Product Description
This is a Series 370 channel balance for non-tilt windows. It moderates the operation of your window sash using a specifically calibrated spring and pulley system that allows the window to stay open when raised.
  • This balance has a 29" long metal channel. When determining the length, do not include the attached fittings. Only measure the metal channel.
  • Comes fully assembled with the 19-004 top and 15-002 (1" deep) bottom fittings and will be ready to install out of the box.
  • The strength you need should be indicated as a stamp or imprint on your old metal channel. If you do not have a stamp, or cannot match it up to our options, weigh your sash on a scale and refer to the chart below.
  • The width of the metal channel measures 9/16" but is considered 1/2" in the trade.
  • Can work for either the left or right side of the window interchangeably.

    • Stamp Option Sash Weight Range
    2810 7 to 12 lbs
    2820 12 to 16 lbs
    2830 16 to 23 lbs
    2840 23 to 28 lbs
    2850 28 to 32 lbs
    2860 32 to 35 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.
Guides
Customer Questions & Answers
Discussion # Of Replies Last Post Date
Window RepairThis discussion includes video(s). 2 Apr 11, 2014
Replacement Channel BalancesThis discussion includes image(s). 6 Dec 21, 2012
1989 spring block & tackel # 2830 Silverline single hung non tilt window balance.This discussion includes image(s). 2 May 19, 2020
Channel Balance A28This discussion includes image(s). 4 Apr 29, 2020
What does the 281000A channel balance stamp mean?This discussion includes image(s). 2 Mar 14, 2020
Window balance assistance This discussion includes image(s). 2 Feb 27, 2020
Replacement channel balanceThis discussion includes image(s). 2 Jan 18, 2020
Denver BalancesThis discussion includes image(s). 4 Jul 2, 2019
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