LiftMaster H-Hoist 1/2 HP Commercial Door Operator Model:Left Hand Mount / H503L5L / Three Phase (208V/230V/460V) Max Thrust: 1124 lbf (500

Max Thrust: 1124 lbf (500 daN)

Upper NP (No power) arm replacement for 18 ft clear opening

For use with various Chamberlain® Screw Drive and Low Profile Screw Drive Garage Door Opener rail assemblies

Warranty: 3-year with  product registration

This 12-foot articulated Microboom arm is equipped with installed LED strips and designed for an 84-inch passage height

LiftMaster H-Hoist 1/2 HP Commercial Door Operator Model:Left Hand Mount / H503L5L / Three Phase (208V/230V/460V) Max Thrust: 1124 lbf (500LiftMaster H Hoist 1 2 HP Commercial Door Operator The LiftMaster H operator is ideal for rolling steel doors grilles and high or vertical lift sectional overhead doors in standard duty cycle commercial applications where a manual hoist is required. Standard Duty cycles up to 25 cycles hour up to 90 cycles day (using continuous rated motor). Please note The following options are mandatory to purchase a Commercial Door Operator, any order not