US Warehouse - FREE FAST Shipping in USA Product Description: ?Included With Purchase? The GFK21 GFK21B fireplace blower fan kit for heatilator includes replacement blower, 3-prong power cord, rheostat variable speed control, magnetically mounted thermostat, wiring harness, Velcro mounting strips and installation instructions.? Cross Reference Numbers: FK21, GFK21A, GFK21B, Rotom HB-RB66, R7-RB66, NOVUS 30, Security UZY3. ?Compatibility? The FK21 fireplace blower fan kit for Heatilator Fireplace EDV3633, EDV3633I, EDV3633IL, GNBC30, GNDC30, GNDH30, GNRC30, GNRC30E, GNRC30L, GNRC30LE, GNRC30LEB, NB3630, NB3630M, NB3630MI, NBV3630, NBV3630I, ND3630, ND3630I, ND3630IL, ND3630L, ND3630M, ND3630MI, NDV3630, NDV3630I, NDV3630IL, NDV3630L, NEVO3630, NEVO3630I, NEVO4236, NEVO4236I, NNXT3933, NNXT3933I, NNXT3933IL. ?Specifications of The Heatilator GFK21B Blower Kit? Length x Width x Height: 7.5" x 3.73" x 3.23", Air discharge length: 4.76". The gfk21b fan Insulation: Class H (rated to 392F). Motor RPM: 3000, Airflow in C.F.M: 80, Volts: 120, Frequency: 60 Hz, Power Consumption: 31 watts. Power Cord Length: 83", Power Cord Type: 3-prong, Thermostat Type: Magnetic, Thermostat Temperature: 120 / 90. ?Adjustable Fan Speeds, Turns On/Off Automatically? The GFK21 heatilator blower speed is manually controlled by rotating the speed control knob until the desired speed is achieved. The thermal switch can automatically control the on/off function of your fireplace blower fan. Temperature switch closes at approximately 120F and opens at approximately 90F (+/- 5F tolerance). ?Installs Easily and Reduces Noise? The heatilator nd3630 fireplace blower comes with double stick foam pads to attach it to the existing fireplace walls. The foam pads also help with stopping any noise created by the heatilator fan from being transmitted to the sheet metal back wall of the gas insert and making it act like a sound amplifier. GFK21 Heatilator Fireplace Blower Kits Blower Size: 7.5"L x 3.23"W x 3.73"H Air discharge: 4.76" Power Cord Length: 83" Material: Aluminum + Galvanized Steel Package: Blower Fan + 3-Prong Power Cord + Pre-wired Harness + Rheostat + Magnetic Thermostat + Noise Reduction Paddings + Installation Thermostat Type: Magnetic Thermostat Temperature (Approximately): Activate at 120F / 50C; Shutoff at 90F / 32C Specification: GFK21 Blower Fan Kits Motor RPM: 3000 Airflow in C.F.M: 80 Volts: 120 Frequency: 60 Hz Power Consumption: 31 watts Insulation: Class H (rated to 392F) Mounting Type: Wall Mount Power Source: Corded Electric Wattage: 31 watts Package Dimensions: 8.9 x 6.85 x 5.24 inches Item Weight: 3.25 pounds Electric fan design: Blower Controller Type: Button Control Included Components: Cord Thank You for Shopping!