Suburban Furnace Core 2609A (SF-35/42Q) CORE ONLY! This product is only the core for the SF-35Q and SF-42Q models.   Compatibility: Suburban SF-35Q/ SF-42Q Furnace BTU Level: 35000 BTU Width: 12 Inch Depth: 20 Inch Height: 7-1/2 Inch With Electronic Ignition: Yes &... See More