This Indoor Safe Vent Free Heater by Mr.
.Heater will help you stay warm in garage. The heater also features a low oxygen shut-off system w. MHVFGH30NGBT Vent Free Blue Flame Natural Gas Garage Heater with 30 000 BTU Output Low Oxygen Shut-Off System and Blue Flame Burner in The heater features a clean burning blue flame tube burner that circulates warm air through natural convection.