18"Cable Drum Feature 1)Diam.shaft=1" 2)Max. door height=18'1" 3)Max.cable diam.=3/16" 4)Max.door weight=500LBS 5)Use on 1" solid shaft with 1/4"keyway Packing: 1)Standard packing 2)1720g/pair,2pairs/ctn. 3)Size of carton:47*40*27cm. The cable drums are provided with a half wrap for the cable.The max.opening height with 2 safety wraps for the cable is 5485mm.The lifting cable provided with a cable sleeve can be fixed in the cutout of the cable drum .The lifting cable can be passed through the camber of the cable drum and fixde with a hollow-head screw .Cable diameter of 5.0 mm .