Motor pack is designed for use with ceiling shutters and backdraft dampers. Motor Pack. Part Number. Power Supply. Required. Running. AMPS. Stall. Torque. Motor Current Charts - AC Motors - full load current tables (rpm approx.) - provided as a guide to the selection of suitable MEM control gear. 4 blade poly propeller with cast aluminum hub • Stainless steel slanted H- frame motor mount and stainless steel hardware • Fan is pre-wired.