
The QMARK MUH0321 is a fan-forced electric unit heater for industrial and commercial spaces such as factories, warehouses, garages, stairwells, shipping docks, power stations, and mechanical rooms. It operates on 208/240V AC, 1-phase power and provides 2.2 kW/3 kW of heat output, with a heating capacity of 7,500/10,200 BtuH. The steel housing has a polyester powder-coated beige finish, and the unit can be mounted on a wall or ceiling. Its pull-through airflow design moves air across the heating element for more even distribution, and the venturi outlet supports added air throw in vertical position.
Key Features:
- Fan-forced heating: Delivers 350 cfm airflow with a 27°F air temperature rise for circulated heat output.
- Heating element design: Aluminum-finned, copper-clad steel sheath element supports cooler sheath temperature and faster heat dissipation.
- Enclosed motor: Completely enclosed fan motor is suited for demanding work areas.
- Adjustable louvers: Includes adjustable air outlet louvers to direct airflow where needed.
- Fan-delay and auto reset: Built-in operating features for heater control and reset function.
- Mechanical selector dial: Uses a mechanical selector dial control type.
- Air throw coverage: Provides up to 12 ft horizontal air throw and 9 ft vertical floor coverage.
- Electrical details: 11A/12.5A, 60 Hz, with a 208/240V AC contactor coil voltage and 3-pole switch type.
- Housing and size: Steel cabinet, 16 in H x 14 in W x 7-1/2 in D.
- Field adaptability: Supports field-installable optional control kits; requires MMB10 and UHMT1.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.