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. 1 per box.