Series 371 Channel Balances

This is the SWISCO Series 371 Side-load Channel Balance Sash Support System (also known as a block and tackle balance) for non-tilt windows. The series is determined by the combination of the top and bottom fittings attached to the metal channel. When determining length, only measure the metal channel; do not include the fittings in this measurement.

The metal channel's width is 9/16", but is considered 1/2" in the trade. It houses a spring and pulley system to raise and lower the sash and comes fully assembled with a 19-031 top guide and a winged 15-005 (1" deep) bottom shoe.
Series 371 Channel Balances
Choose a balance below
13" 14" 15" 16" 17"
18" 19" 20" 21" 22"
23" 24" 25" 26" 27"
28" 29" 30" 31" 32"
33" 34"
click here for lengths over 34"