‧VERTICAL LIFT - DM18VL
‧MAXIMUM DOOR HIGH:18'1"
‧RATED LIFTING WEIGHT PER DRUM:500LBS
‧MAXIMUM CABLE DIAMETER:3/16"(5mm)
‧SET SCREWS INSTALLED    
‧USE ON 1" SOLID SHAFT WITH 1/4" KEYWAY     
‧CABLE LENGTH FORMULA:
   FLOOR TO SHAFT CENTER +237"MINUS DOOR HEIGHT
   (DNS+226",MINUS DOOR HEIGHT)