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 a replacement channel balance
How to Replace a Non-Tilt Channel Balance
How to Repair a Jammed Window
$8.55/each
Quantity Price
1-11 $8.55
12-49 $7.70
50-99 $7.27
100-249 $6.84
250+ $6.41
Please Note: Bulk pricing applies only to purchases of the same option
Option:
1710
1720
1730
1740
1750
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.
Guides
Customer Questions & Answers
Discussion # Of Replies Last Post Date
Milgard Window Channel Balance 18 inch long 1/2 inch wideThis discussion includes image(s). 2 Jul 2, 2019
Sash replacementThis discussion includes image(s). 2 Jun 28, 2019
18 inch sash balanceThis discussion includes image(s). 6 May 24, 2019
Channel BalanceThis discussion includes image(s). 2 May 9, 2019
Help Identify my 18" Block & TackleThis discussion includes image(s). 2 Dec 2, 2018
Window balances and stops at the topThis discussion includes image(s). 2 Jun 15, 2018
Top Sash GuideThis discussion includes image(s). 10 May 22, 2017
Replacement partsThis discussion includes image(s). 7 Nov 10, 2016
Start a new discussion
Use this form to ask questions or to share your experiences regarding this product. Every discussion will be reviewed and answered by our experts.
(your email address will be kept private and is only used to inform you when a response has been made)