Versatile, low profile furnaces offer maximum ducted heating for mid-size and large RVs. Designed for interior serviceability with a front (inside) gas connection and a small vent terminal on the coach exterior, these furnaces can be installed up to 9" from the wall. Since no exterior access door is required, the SF-F is aesthetically appealing and a more economical installation choice. Features identical cabinet dimensions for installation flexibility, quiet, multi-ported stainless steel burners, sealed forced-draft combustion, automatic direct spark ignition, and low amp draw. Cut-out size: 7-1/2" H x 17" W x 20" D. Thermostat is no longer included as of August 1, 2012.