Compact, yet powerful 12 volt direct discharge furnaces with attractive grilles offer superior ductless heating for smaller RVs, trailers, truck campers and even pop-ups. Features include energy saving electronic ignitions, 2.8 amps, uniform cabinet size for installation flexibility, wall thermostats, gasket-sealed vent assemblies, steel gas manifolds, sealed forced-draft combustion, and chrome-plated vent caps. Cut-out size: 9-3/8" H x 9-3/8"W x 21?27-3/8". 1 per box. Thermostat is no longer included as of August 1, 2012.