S371-28

28" Series 371 Channel Balance

Product Code: S371-28

$10.97/each

Quantity	Price
1-11	$10.97
12-49	$9.87
50-99	$9.32
100-249	$8.78
250+	$8.23

Please Note: Bulk pricing applies only to purchases of the same option

Discounts starting at 12 pcs.
View Bulk Pricing

How to measure the length of the Series 371 channel balance.

Product Description

This is a Series 371 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 28" long metal channel. When determining the length, do not include the attached fittings. Only measure the metal channel.
Comes fully assembled with the 19-031 top and 15-005 (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.
Often used with Rollyson non-tilt windows.

Stamp Option	Sash Weight Range
2710	5 to 9 lbs
2720	9 to 13 lbs
2730	13 to 19 lbs
2740	19 to 26 lbs
2750	26 to 30 lbs
2760	30 to 33 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 is a code that indicates how much weight a pair of balances can support. You can use the stamp on your original channel balance as a reference in most cases, or you can weigh your sash and refer to the chart above. If your sash’s weight falls outside the weight ranges listed on that chart, or you are still unsure how to proceed, ask our experts for help.

Guides

How to replace a channel balance

Related Item(s)

18-124P

$3.97

Top Sash Guide Pair, Rollyson

Customer Questions & Answers

Discussion	# Of Replies	Last Post Date
Top sash stop and window channel balance	4	Jul 29, 2022
Sash cam for 2740 28" balance	5	Jul 25, 2022
Custom Balances	2	Jul 15, 2020
Rollyson	4	Jun 7, 2020
BSI 2740 window channel balance	4	Mar 16, 2019
Need window balances for these.	2	Oct 25, 2018
Identify replacement Sash Lifts	4	Aug 8, 2017
2740 channel guide	4	May 23, 2017

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