Calorie liquid propane blue flame wall-mounted heater without exhaust ventilation(Manual)

Special featureNoiselessColourWhiteForm factorWallIndoor/Outdoor usageIndoorPower sourceFuel-basedHeating methodfan__forced_airProduct Dimensions10.5D x 28.1W x 24.1H CentimetresRecommended uses for productGarage, HomeMounting typeWall Mount?About this item Liquid Propane Ready (Fuel conversion not permitted).Mounting type:Wall Mount Blue Flame Technology works by convecting heat to warm the air the same way as a central heating system 24, 000-30, 000 BTU’s/hr variable heat output for up to 1, 000 sq. ft. Variable control knob offers the most customizable heat settings LOW – 24, 000 BTU MED – 27, 000 BTU HI – 30, 000 BTU No electricity required allows for reliable back-up heating incase of an emergency situation ?