Suburban Manufacturing SFQ Series furnaces provide maximum heating performance in a ducted unit. Specifications•Type: LP Gas•BTU Level: 30000 BTU•Stage: Dual•Discharge Type: Side•Ignition Type: Direct Spark Ignition•Width: 17 Inch•Height: 7-1/2 Inch•Depth: 20 Inch At Only 7-1/2 Inches High, They Can Be Easily Installed In Areas That Might Otherwise Be Left Unused Provides Maximum Heating Performance In A Ducted Unit, With Capacities From 20, 000 To 40, 000 BTUH | Suburban Mfg SF-30FQ Direct Discharge Furnace, 30,000 BTU