60,000 BTU Natural Gas Floor HeaterAffordable solution for large areas with limited floor space. This unobtrusive furnace requires no above the floor space. Natural convection quietly and efficiently circulates warm air. Combustion chamber lifts out for easy servicing. California residents see Prop 65 WARNINGS 58% AFUE with70% heats approximately 850 sq. ft. No electricity required; great for backup heat during a power outage Fitted with an automatic floor register grille temperature