20" Series 385 Channel Balance

Product Code: S385-20

20" Series 385 Channel Balance
Main product image of the S385-20 20" Series 385 Channel Balance
Close up of the S385 balance top.
Close up of the S385 balance bottom.
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 $8.75
12-49 $7.87
50-99 $7.44
100-249 $7.00
250+ $6.56
Please Note: Bulk pricing applies only to purchases of the same option
add $0.75
add $1.25
Product Description
This is a Series 385 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 20" long metal channel. When determining the length, do not include the attached fittings. Only measure the metal channel.
  • Comes fully assembled with the 19-005 top and 15-004 (1-3/32" 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
1910 5 to 8 lbs
1920 8 to 12 lbs
1930 12 to 14 lbs
1940 14 to 17 lbs
1950 18 to 21 lbs
1960 22 to 26 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
Sash window balance This discussion includes image(s). 2 Sep 21, 2019
Replacement Balance NeededThis discussion includes image(s). 2 Aug 23, 2019
Window Replacement 19 5 JO CALDWELLThis discussion includes image(s). 2 Jul 19, 2019
Milgard Window Channel BalanceThis discussion includes image(s). 2 Jun 19, 2019
Channel BalanceThis discussion includes image(s). 4 Jun 13, 2019
Window balanceThis discussion includes image(s). 2 Jun 3, 2019
Need new oneThis discussion includes image(s). 2 May 28, 2019
Window BalanceThis discussion includes image(s). 2 May 6, 2019
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