Whf100 Dyna-glo Heater Fan Heater Fan: 6 1/8" L x 5 5/16" WSpacing of screw holes: 5 1/2" L x 4 3/4" WPackage: Heater Fan + 4 Feet Long Three Prong Plug + Built-in Thermostat + Mounting ScrewsVolts: 120VFrequency: 60 HzPower Consumption: 18wHeat Output: 30000 BTU WHF100 Heater Fan Fits Mr. Heater, Comfort Glow, Dyna-Glo Heaters. Fits Dyna-Glo Vent Free Wall Heater's 10,000 BTU's and Above. Fits 2015 and Newer Kozy World Models Above 6,000 BTU's. QUESTIONS & ANSWERS Question: Which brand does it fit? Answer: Dyna-Glo Heaters, Mr. Heater, Comfort Glow. Question: How many decibels is the fan noise? Answer: This fan will make less than 45 db. It's pretty quiet. Question: What are the dimensions? Answer: The blower fan is 6 1/8"L x 5 5/16"W. The spacing of screw holes is 5 1/2"L x 4 3/4"W. Dyna-Glo Dyna-Glo BF30PMDG 30,000 BTU, Dyna-Glo BF30NMDG-4 30,000 BTU,Dyna-Glo BFSS30LPT-2P 30,000 BTU, Dyna-Glo BFSS30NGT-4N 30,000 BTU, Dyna-Glo IRSS30NGT-2N 30000 BTU. Dyna-Glo Dyna-Glo BF20NMDG 20,000 BTU, Dyna-Glo BF20NMDG-4 20,000 BTU, Dyna-Glo BFSS20NGT-2N 20,000 BTU, Dyna-Glo BF20PMDG-4 20,000 BTU, Dyna-Glo IRSS18LPT-2P 18000 BTU, Dyna-Glo IRSS18NGT-2N 18000 BTU, Dyna-Glo BF10PMDG-4 10,000 BTU, Dyna-Glo BFSS10NGT-2N 10,000 BTU. Kozy World and Comfort Glow KWD154, KWD215, KWD216, KWD258, KWD259, KWD325, KWD326, KWD378, KWD379, KWD525, KWD526, KWG362, KWG363, KWN211. Kozy World and Comfort Glow KWN213, KWN253, KWN375, KWN391, KWN395, KWN521, KWN523, KWP212, KWP214, KWP254, KWP376, KWP392, KWP396, KWP522, KWP524. 3 OPERATE MODES MAN MODE - Fan Always ON.OFF MODE - Fan Will Close.AUTO MODE - Fan automatically operates when the heater gets above 113 degrees Fahrenheit to ensure it’s blowing ONLY warm/hot air. HEATER FAN FUNCTION Cut out the Noise, enjoy all-day serenity, as low as 45 db.High heat output, 30000 British Thermal Units. Stay warm and comfortable during winter storms. HEATER FAN MOUNT Has a precut hole on the backside of heater. Just remove knockout and held in place with 4 screws included with the fan.Just be patient it takes about 10 minutes to kick on after heater starts on automatic mode.