26" Series 351 Channel Balance

Product Code: S351-26

26" Series 351 Channel Balance
Main product image of the S351-26 26" Series 351 Channel Balance
Measurements of 19-002 top balance shoe.
Measurements of 15-002 bottom shoe.
How to identify a replacement channel balance
How to Replace a Non-Tilt Channel Balance
How to Repair a Jammed Window
Quantity Price
1-11 $9.75
12-49 $8.78
50-99 $8.29
100-249 $7.80
250+ $7.31
Please Note: Bulk pricing applies only to purchases of the same option
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Product Description
This is a Series 351 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 26" long metal channel. When determining the length, do not include the attached fittings. Only measure the metal channel.
  • Comes fully assembled with the 19-002 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
    2510 5 to 9 lbs
    2520 9 to 15 lbs
    2530 15 to 19 lbs
    2540 19 to 25 lbs
    2550 25 to 28 lbs
    2560 28 to 30 lbs
    2565 30 to 33 lbs
    2570 33 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
Old rental apartment sash marked 2530This discussion includes image(s).This discussion includes video(s). 12 May 4, 2020
Need help identifying window spring for replacementThis discussion includes image(s). 3 Apr 15, 2020
IWC 26" Channel Balance with no markingsThis discussion includes image(s). 2 Apr 6, 2020
Stamp option when both cover the same weight 2 Mar 22, 2020
Caldwell 25 2 IS window balance channelThis discussion includes image(s). 2 Mar 12, 2020
Balancer windowThis discussion includes image(s). 2 Mar 10, 2020
Channel balance, need help IDThis discussion includes image(s). 2 Oct 2, 2019
Gienow WindowsThis discussion includes image(s). 4 Sep 5, 2019
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