18" Series 351 Channel Balance

Product Code: S351-18

18" Series 351 Channel Balance
Main product image of the S351-18 18" Series 351 Channel Balance
Measurements of 19-002 top balance shoe.
Measurements of 15-002 bottom shoe.
How to Identify Replacement Channel Balances
How to Replace a Non-Tilt Channel Balance
How to Repair a Jammed Window
Quantity Price
1-11 $8.81
12-49 $7.93
50-99 $7.49
100-249 $7.05
250+ $6.61
Please Note: Bulk pricing applies only to purchases of the same option
add $0.75
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 18" 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
    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
window balanceThis discussion includes image(s). 4 Oct 16, 2021
Searching for 17.2 BX CMC 7This discussion includes image(s). 4 Jun 10, 2021
Bathroom window channel balanceThis discussion includes image(s). 4 May 23, 2021
channel springs idThis discussion includes image(s). 2 Mar 8, 2021
Window balanceThis discussion includes image(s). 3 Feb 17, 2021
can you help me identify this ,,,This discussion includes image(s). 3 Feb 17, 2021
SASH BALANCE REPLACEMENT PARTSThis discussion includes image(s). 4 Nov 9, 2020
Heavy Sash Balance questionThis discussion includes image(s). 6 Mar 18, 2020
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