Constant Force Window Sash Balance Coil

Constant force coil window balance for single and double hung windows a series 1 2 x 1 1 4 constant force coil balance constant force 1 2 coil 1 1 4 balance block. Inverted constant force window balances utilize a housing or shoe that carries a coil spring having a free end secured to a window jamb channel with a mounting bracket screw or other element. As the coil spring unwinds the recoil tendency of the spring produces an upward force to counter the weight of the window sash.

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