Opera-MJ / Opera-MH
Medium-duty jackshaft for standard, high and vertical lift sectional doors and small rolling doors and grilles: floor-level disconnect on the MJ, Hoist-a-Matic® chain hoist on the MH.
Manaras-Opera builds commercial and industrial door operators in Canada, and builds nothing else. Jackshafts, gearheads, trolleys and sliding-door operators, from medium duty up to very heavy industrial duty, with the parts shelf and the technical support on this side of the border.
Rivett specifies, installs and services the line across Whitby, Durham Region, the Greater Toronto Area, Kingston and Eastern Ontario, out of the same Overhead Door Division that answers the 24-hour service line at 1 (905) 424-2512.
Built in Canada
Compliant to ANSI/CAN/UL 325
The right Manaras model falls out of three answers: the door you are motorizing, the duty that door will see, and the mechanical reduction it needs. Get those wrong and you either pay for an operator the door will never use, or replace a light-duty unit in two years.
Tell us the opening, the cycles per hour and per day, the voltage and phase at the wall, and whether the space is wet, dusty or unheated. We will spec from there, and we will tell you when a medium-duty operator is genuinely enough.
Get a QuoteA cross-section of the line, from medium-duty jackshafts to high-speed industrial drives. Ask us to match a model to your opening.
Medium-duty jackshaft for standard, high and vertical lift sectional doors and small rolling doors and grilles: floor-level disconnect on the MJ, Hoist-a-Matic® chain hoist on the MH.
Heavy-duty commercial jackshaft with the patented Hoist-a-Matic®; the HJ adds a floor-level disconnect for grilles where manual egress is required.
Heavy-duty and very heavy-duty industrial worm-gear operators for industrial sectional doors, rolling doors and grilles, with a chain hoist for manual operation.
The high-speed line: up to twice the speed of a standard jackshaft with managed soft-starts and soft-stops, and up to 30 in/sec on the RVH for vinyl rolling doors.
An operator is chosen once and lived with for a decade.
Duty cycle, manual release and who services it are what decide how that decade goes.
A manufacturer that makes commercial operators and nothing else, with parts and factory technical support that do not cross a border to reach you.
Medium, heavy commercial, heavy industrial and very heavy industrial models exist for a reason. We spec against cycles per hour and per day.
The patented Hoist-a-Matic® self-engaging chain hoist and floor-level disconnects with electrical cut-out mean the door moves by hand when it has to.
Operators are compliant to ANSI/CAN/UL 325, installed with monitored entrapment protection (photo eyes or a sensing edge) or set to constant pressure to close.
Single-phase capacitor-start and three-phase motors with high starting torque, so the operator matches the power you have rather than the power you wish you had.
A dedicated emergency line at 1 (905) 424-2512, plus scheduled servicing that keeps high-cycle doors running and call-outs rare.
Specification, installation, commissioning and after-care, all handled by our own overhead door technicians.
Jackshaft, gearhead, trolley and sliding-door operators installed, wired and commissioned.
Emergency dispatch for doors that will not run, with common Manaras parts carried on the truck.
Scheduled inspection of limits, brakes, hoists and safety devices on high-cycle doors.
Push-button stations, radio controls, photo eyes, sensing edges, separate control panels and factory modifications.
49 years of local knowledge across Ontario. Each location is staffed with
product
specialists who know the lines.
All services: doors, hardware, garage doors, fabrication
111 Industrial Drive, Unit 1
Whitby,
ON L1N 5Z9
Mon – Thu
8:00 AM – 5:00 PM
Friday
8:00 AM – 1:00 PM
Residential & commercial overhead doors, service dispatch
105 Industrial Drive, Unit 6
Whitby,
ON L1N 5Z9
Mon – Thu
8:00 AM – 5:00 PM
Friday
8:00 AM – 4:00 PM
Doors & architectural hardware
620 Cataraqui Woods Drive
Kingston,
ON K7P 1T8
Mon – Thu
8:00 AM – 5:00 PM
Friday
8:00 AM – 1:00 PM
Email all locations: sales@rivett.com
Do not see your area listed? Call 1 (905) 668-4455 (Whitby) or 1 (613) 389-5218 (Kingston). We regularly serve projects beyond these boundaries.
Free on-site estimates for residential and commercial projects. Same-day emergency dispatch for overhead door failures. One call, one company, one standard of quality since 1977.
1 (905) 668-4455 1 (613) 389-5218 1 (905) 424-2512© 2026 Rivett Architectural Hardware Ltd. All rights reserved.
