Series 377 Channel Balances

Series 377 Sideload Channel Balance Sash Support System for non-tilt windows. Also known as block and tackle balances, these balances have a width of 9/16, which is considered 1/2" in the trade. A spring and pulley system, designed to lift and lower the sash, are housed inside the channel. The Series 373 comes with an attached 19-018 top guide and 15-005 winged bottom fitting, called a shoe. The width of the shoe from wing tip to wing tip is 15/16.
Series 377 Channel Balances
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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"