Qmark from Marley. Qmark and its associated brands, Marley, Berko and Fahrenheat, are the leading brands of residential and commercial heaters and ventilation systems.
What are electric duct heaters?
Electric duct heaters are stand-alone heating units which are designed for installation within air handling systems. Some of these heaters are a fundamental part of a number of other equipment; for instance, some may be directly attached to heat pumps, variable air volume terminals, or fans.