Call 1-877-372-5237togettheCompensating Cable Installation Guide ... Super Swayless for speeds up to 700 ft/min 3.56 m/sec Super Swayless ... Dampening Device (two required per installationmounting ... Mounting Hole Dia. Quantity in mm in mm WF-RDD2 8 w x 8 d x 2 t 203 w x 203 d x ... 50 t 1/2 13 1 WF-RDD2 Super Swayless ... of compensating cables for speeds of up to 700 feet/min 3.56 m/sec. The WF-RDD2 ... uses free-turning nylon rollers tocontain and dampen any oscillation or ... cable sway that may be generated by cable motionat ... higher speeds. 4.00" 101.6 mm 6.00" 152.4 mm 2.00" 50.8mm WF-RDD2 ... DAMPENING DEVICE Thesebrackets are especially designed to ...