46 Full Size Natural Gas Vent Free Fireplace System 32,000 BTU, Rich Heritage. Rich heritage finish Natural gas ready (fuel conversion not permitted) Up to 32, 000 BTU's/hr heats up to 1, 100 sq. Ft Includes a hand-held thermostat remote control that works as an on/off switch or a programmable thermostat Dual burner provides 2 rows of flames for a more Full looking fire.