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QMARK

QMARK is a brand of electric heating equipment and controls, historically associated with Marley Engineered Products. The line covers electric baseboard heaters, wall and ceiling heaters, and the thermostats that control them. Products are intended for residential, commercial, and light industrial spaces where electric resistance heating is specified. 3G Electric supplies QMARK components globally, with stock including unit-mount thermostats, surface-mount ceiling heaters, and recessed wall heaters. The thermostat range includes mechanical selector dial models for electric baseboard heaters. These are unit-mount devices that install directly on the heater. They are available in single-pole and two-pole switching configurations, both rated for 120/277V AC operation, with a control range of 40° to 100°F. Housings are white. The ceiling heater family consists of fan-forced surface-mount units. Selectable wattage outputs allow one unit to match different load requirements: models are available with 2000W, 3000W, or 4000W outputs, and others with 2500W, 3800W, or 5000W outputs. Voltage and phase options include 208V AC (1 or 3-phase) and 277V AC (1-phase). These heaters have a white finish and compact dimensions, typically around 10-1/2 in high, 16-7/16 in wide, and 5-3/4 in deep. Thermostats are not included with the ceiling heaters. The recessed wall heater line includes large programmable models with a 5-2 thermostat. Dual wattage output is selectable between 1800W and 4000W or 4800W, depending on the model. They operate on 277V AC or 208V AC single-phase power and have a white grille. Rough-in dimensions are provided for installation planning. For technical buyers, QMARK products are specified by voltage, phase, wattage, pole count, and control range. The mechanical thermostats use a selector dial and are designed for direct mounting on the heater. The heaters are fan-forced or convection, with surface-mount or recessed installation. 3G Electric supports the QMARK line by stocking these SKUs and providing access to specification data for procurement and maintenance teams. The catalog includes current and legacy part numbers, and 3G Electric can source additional QMARK items on request. This allows plant engineers and maintenance managers to standardize on QMARK components across multiple facilities. The product data provided includes MPNs, voltage ratings, wattage options, phase requirements, and physical dimensions, which are the primary selection criteria for electric heating projects. 3G Electric does not manufacture QMARK products; it distributes them as part of its industrial equipment offering. The company serves customers worldwide, with logistics and documentation support for international orders. For replacement or new installation, the QMARK line offers a range of electric heating solutions with defined electrical and mechanical specifications.

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About QMARK

QMARK is a brand of electric heating equipment and controls, historically associated with Marley Engineered Products. The line covers electric baseboard heaters, wall and ceiling heaters, and the thermostats that control them. Products are intended for residential, commercial, and light industrial spaces where electric resistance heating is specified. 3G Electric supplies QMARK components globally, with stock including unit-mount thermostats, surface-mount ceiling heaters, and recessed wall heaters. The thermostat range includes mechanical selector dial models for electric baseboard heaters. These are unit-mount devices that install directly on the heater. They are available in single-pole and two-pole switching configurations, both rated for 120/277V AC operation, with a control range of 40° to 100°F. Housings are white. The ceiling heater family consists of fan-forced surface-mount units. Selectable wattage outputs allow one unit to match different load requirements: models are available with 2000W, 3000W, or 4000W outputs, and others with 2500W, 3800W, or 5000W outputs. Voltage and phase options include 208V AC (1 or 3-phase) and 277V AC (1-phase). These heaters have a white finish and compact dimensions, typically around 10-1/2 in high, 16-7/16 in wide, and 5-3/4 in deep. Thermostats are not included with the ceiling heaters. The recessed wall heater line includes large programmable models with a 5-2 thermostat. Dual wattage output is selectable between 1800W and 4000W or 4800W, depending on the model. They operate on 277V AC or 208V AC single-phase power and have a white grille. Rough-in dimensions are provided for installation planning. For technical buyers, QMARK products are specified by voltage, phase, wattage, pole count, and control range. The mechanical thermostats use a selector dial and are designed for direct mounting on the heater. The heaters are fan-forced or convection, with surface-mount or recessed installation. 3G Electric supports the QMARK line by stocking these SKUs and providing access to specification data for procurement and maintenance teams. The catalog includes current and legacy part numbers, and 3G Electric can source additional QMARK items on request. This allows plant engineers and maintenance managers to standardize on QMARK components across multiple facilities. The product data provided includes MPNs, voltage ratings, wattage options, phase requirements, and physical dimensions, which are the primary selection criteria for electric heating projects. 3G Electric does not manufacture QMARK products; it distributes them as part of its industrial equipment offering. The company serves customers worldwide, with logistics and documentation support for international orders. For replacement or new installation, the QMARK line offers a range of electric heating solutions with defined electrical and mechanical specifications.

Common Applications

  • Commercial buildings — QMARK CDF series surface-mount ceiling heaters for supplemental or primary heating in offices and retail spaces.
  • Residential baseboard heating — QMARK TA1AW or TA2AW unit-mount thermostats for controlling electric baseboard heaters.
  • Industrial facilities — QMARK SSHO4007 recessed wall heaters with programmable thermostat for large spaces requiring dual wattage.
  • Institutional buildings — QMARK CDF547SE ceiling heaters for 277V AC, 1-phase applications in schools or hospitals.
  • Warehouses — QMARK CDF558SE ceiling heaters with selectable 2500W/3800W/5000W output for high-bay heating.
  • Multi-family housing — QMARK SSAR4808 recessed wall heaters with 1800W/4800W dual output for apartment heating.

Frequently asked questions

Common questions about QMARK from 3G Electric.

What voltage and pole configurations are available for QMARK unit-mount thermostats?

QMARK unit-mount thermostats for electric baseboard heaters are available in single-pole and two-pole versions. Both are rated for 120/277V AC operation. The single-pole model (e.g., TA1AW) switches one line, while the two-pole model (e.g., TA2AW) switches both lines. Both have a control range of 40° to 100°F and a white housing. They are designed for direct installation on the heater.

What wattage outputs can be selected on QMARK surface-mount ceiling heaters?

QMARK surface-mount ceiling heaters offer selectable wattage outputs. Models such as the CDF548SE and CDF547SE provide 2000W, 3000W, or 4000W. Models such as the CDF558SE and CDF557SE provide 2500W, 3800W, or 5000W. The wattage is selected at installation to match the circuit and heating load. These heaters are fan-forced and operate on 208V AC (1 or 3-phase) or 277V AC (1-phase), depending on the model.

Do QMARK recessed wall heaters include a thermostat?

Yes, large programmable recessed electric wall heaters from QMARK include a programmable 5-2 thermostat. For example, the SSHO4007 and SSAR4808 have this built-in thermostat. They also offer dual wattage output: 1800W or 4000W for the SSHO4007, and 1800W or 4800W for the SSAR4808. They operate on 277V AC or 208V AC single-phase power, respectively, and have a white grille.

What are the physical dimensions of QMARK surface-mount ceiling heaters?

QMARK surface-mount ceiling heaters have compact dimensions. The CDF547SE and CDF557SE measure 10-1/2 in high x 16-7/16 in wide x 5-3/4 in deep. The CDF548SE measures 9-11/16 in high x 16-7/16 in wide x 5-3/4 in deep. These dimensions are for the heater body and should be considered for ceiling mounting clearance. Thermostats are not included with these heaters.

Can QMARK electric baseboard heater thermostats be used with other heaters?

QMARK unit-mount thermostats are specifically designed for electric baseboard heaters. They are unit-mount, meaning they install directly on the heater. While they could technically control other resistive heating loads within their electrical ratings (120/277V AC, 40° to 100°F), they are not intended for use with inductive loads or applications requiring a remote sensor. For other heater types, consult the heater manufacturer's recommendations.

What phase options are available for QMARK ceiling heaters?

QMARK surface-mount ceiling heaters are available with different phase options. Models such as the CDF548SE and CDF558SE can operate on 208V AC with either 1-phase or 3-phase power. Models such as the CDF547SE and CDF557SE operate on 277V AC, 1-phase only. The phase requirement is determined by the electrical supply and the selected wattage. Always verify the phase and voltage match the available circuit before installation.