Series 377 Channel Balances

This is the SWISCO Series 377 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. Used in windows manufactured by Pan American.

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 19-018 top guide and a winged 15-005 (1" deep) bottom shoe.
Series 377 Channel Balances
Choose a balance below
12" 13" 14" 15" 16"
17" 18" 19" 20" 21"
22" 23" 24" 25" 26"
27" 28" 29" 30" 31"
32" 33"
click here for lengths over 33"