LiftMaster J 1/2 HP Industrial-Duty Jackshaft Operator Model:J503L5 / Three Phase (208V/230V/460V) weight of door/gate wing: 551

weight of door/gate wing: 551 lbs (250kg)

This is a Gear Reducer 40:1 Replacement Kit

Maximum anti-crushing safety and reverse function on obstacles thanks to the magnetic encoder

Linear Mtr Assembly 115V RS | LIN-2510-188

12 - 18 ft

LiftMaster J 1/2 HP Industrial-Duty Jackshaft Operator Model:J503L5 / Three Phase (208V/230V/460V) weight of door/gate wing: 551LiftMaster J 1 2 HP Industrial Duty Jackshaft Operator The LiftMaster J operator is ideal for lighter rolling steel doors grilles and high or vertical lift sectional overhead doors in standard duty cycle commercial applications where a manual hoist is not required. Standard Duty up to 25 cycles hour and up to 90 cycles day (using continuous rated motor). Please note The following options are mandatory to purchase a Commercial Door Operator, any order