33" Series 385 Channel Balance

Product Code: S385-33

33" Series 385 Channel Balance
Main product image of the S385-33 33" 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 $10.75
12-49 $9.68
50-99 $9.14
100-249 $8.60
250+ $8.06
Please Note: Bulk pricing applies only to purchases of the same option
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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 33" 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
3210 8 to 13 lb
3220 13 to 18 lb
3230 18 to 23 lb
3240 23 to 28 lb
3250 28 to 32 lb
3260 32 to 35 lb
3265 35 to 39 lb
3270 39 to 42 lb
3275 42 to 45 lb
*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
32-9? What Stamp Option do I Need? 2 Apr 19, 2019
Window Sash Weight 2 May 21, 2020
33 inch channel balance 32-4 LX CMC 11This discussion includes image(s). 6 May 19, 2020
Milgard window balance This discussion includes image(s). 2 May 19, 2020
Verifying correct part number 2 May 18, 2020
Replacement 33 inch series 385 channel balance.This discussion includes image(s). 6 May 16, 2020
Please help identify the suitable replacement for these channel balancesThis discussion includes image(s). 4 May 10, 2020
32 4 IU CMC 7, footer & header w/ wings. Metal is 33" long, 1/2" thick, This discussion includes image(s). 2 May 7, 2020
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