... action,power adjustable 3.4 kind Valves 4.overhead door close 1133-AW: size: 52x39mm,door weight 40-65kgs.3023-AW: size: 200X19mm ... -65kgs.8122-AW: size: 60x38mm,door weight 40-65kgs.813-6CW: size: 160x46mm,door weight 40-150kgs.door closer,overhead door closer, door hardware8100 series adopt the high ...