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  • Prime-Line 4-1/2 lb. Wood Sash Balance, Steel
  • Prime-Line 4-1/2 lb. Wood Sash Balance, Steel

Prime-Line 4-1/2 lb. Wood Sash Balance, Steel

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This is wood window sash balance for a 4-1/2 lb. window, or 9 lbs. if one is used on both sides. This sash balance style has been used by many manufacturers of windows for several decades. It fits a 3-1/4 in. by 6-3/8 in. pocket that has been mortised about 2 in. above the centerline of the window frame. It features an all steel construction, with a coil spring inside that retracts aircraft cable lifters as it offsets the weight of the window (vent).