LiftMaster® LJ8900W

The Model LJ8900W is a jackshaft door opener, as manufactured by The Chamberlain Group, Inc. and is for use on light-duty commercial standard, vertical and high lift sectional doors with torsion assemblies. It is rated up to 10 cycles per hour during peak periods. It features a compact design ideal for limited height, cathedral, or obstructed ceiling installations.

• Jackshaft door operator
• Motor: Heavy-duty 12 Volts DC
• Single phase: 115 V
• Wall-mount installation: mounts on the left or right side of door. No rails to hang, the operator simply mounts on the wall and attaches to the door torsion bar. Unit requires an electrical outlet within 6 ft (1.83 m)
• Drive Mechanism: Internal Chain and Sprocket
• Quick-ConnectTM terminals for faster wire installation
• Patented absolute positioning technology: The newest technology in commercial door openers. This patented design allows the electronic limits to be extremely accurate, even after a power failure.
• Maximum door weight: 850 lb (385 kg)
• Minimum side room required: 14 in (36 cm)
• UL and CSA listed.
• Requirements: for doors up to 14 ft (4.3 m) high, 18 ft (5.5 m) wide or 180 ft2 (16.6 m2) maximum
• 2-year motor warranty.