LiftMaster MHS Medium-Duty Slow-Speed Commercial Door Operator for Rolling Sheet Doors
Delivery is not included in the product price. Delivery and pickup arrangements must be confirmed with our team in advance based on the product, delivery address, access conditions, and any other project requirements.
Free showroom pickup is available by appointment only. Please call us in advance so we can confirm availability and prepare your order for pickup.
All orders are currently processed by phone. Please contact us to arrange pickup, delivery, product availability, and final order details 416-630-0266
LiftMaster MHS Medium-Duty Slow-Speed Commercial Door Operator is a wall-mounted door control solution designed for rolling sheet doors that require controlled, slow-speed operation in commercial environments.
This operator is recommended for small rolling sheet doors and grilles in medium-duty cycle applications where slower operating speed and a manual hoist are required. It delivers dependable performance for facilities with moderate daily usage.
The MHS series is engineered with solid-state logic control, mechanical limit settings, and emergency manual operation, making it a reliable choice for commercial and industrial door systems.
Specifications Application
• Rolling sheet doors and grilles
• Medium-duty commercial use
• Wall-mounted installation
Rated Duty Cycle
• Up to 12 cycles per hour
• Up to 50 cycles per day
Operator Speed
• 4–5 inches per second (slow speed)
Limit Settings
• Mechanical
Emergency Operation
• Floor-level manual emergency release sash chain
• Automatic re-connect when tension is removed
Control & Programming
• Solid-state medium-duty logic circuit board
• Tactile programming buttons
• Programmable timer-to-close: 5–60 seconds (5-second increments)
Controls
• 3-button wall control station
• Push-button station (Open / Close / Stop)
Electrical & Drive
• Voltage: Single-phase 115V
• Control circuit: 24V NEC Class 2
• Drive reduction:
– First stage heavy-duty 4L V-belt
– Second and third stages #48 chain
• Bearings: Heavy-duty oil-filled bushings
• Brake: None (slow-speed operator for light sheet doors)
Construction
• NEMA 1 electrical enclosure
• Heavy-duty 11-gauge steel frame
• Baked-on powder coat finish
• All reduction sprockets drilled and pinned to shafts
Capacity
Maximum door area (approx.):
• Aluminum grilles (24-ga): up to 320 sq. ft.
• Aluminum doors (22-ga): up to 275 sq. ft.
• Steel grilles (20-ga / 18-ga): up to 200 sq. ft.
Installation Limits
• Maximum door height: 14 ft (standard)
• Maximum door width: 22 ft
• Maximum allowable square footage: 320 sq. ft.
Compliance & Safety
• Designed to meet UL 325 requirements
• Compatible with LiftMaster monitored entrapment protection devices
Warranty
• Limited warranty: 2 years
Price available upon request. Contact us for a custom quote.
Details
Professional Security Hardware.
All products offered by Safe & Hardware Store are commercial-grade and designed for durability, security, and long-term performance.
Our safes, locksets, mortise locks, deadbolts, and door hardware meet industry standards and are suitable for residential, commercial, and institutional applications.
If you require assistance selecting the correct model for your project, our team is available to help.
Delivery & Installation Policy
Delivery is NOT included in the listed product price.
Due to the weight, size, and installation requirements of safes and commercial hardware, delivery and installation costs vary depending on:
• Product weight and dimensions
• Delivery location
• Stairs, elevators, or special access requirements
• Basement or upper-floor placement
• Required installation or anchoring
Minimum delivery fees may apply.
All deliveries and installations must be confirmed in advance.
Please call us before placing your order to receive an accurate delivery and installation quote.