Alfresco Built In Propane Gas Double Side Burner AXESB 2 LP. AXESB 2 LP. Conventional Side Burners. This Alfresco Propane Gas Double Side Burner has all of the power and control of a professional kitchen range. Side burner features two 20,000 BTU brass burners, recessed top for wind protection and easy cleaning, and all commercial stainless steel with heli arc welded seams. This AXE model burner also features a stainless steel cooking grid, includes a matching stainless steel cover, and control knob accent lights to match the Alfresco Grills product line. 110V is required for ignition. Stamped with the Alfresco logo, you can be assured you are receiving high quality outdoor kitchen equipment. All side burner units with a serial number starting with 18 have 110 VAC ignition system and control knob accent lights.