GFK21 FK21 Fireplace blower kit for Heatilator, Majestic, CFM, Vermont Castings, Monessen; Rotom #HB-RB21K Includes ball bearing blower, 3-prong power cord, rheostat variable speed control, and thermostat. Also includes Velcro mounting strips, noise reduction padding, and installation instructions. 80 CFM, 3000 RPM, 120 Volts, 0.86 Amps Total Length = 7.5" Width = 3.73 Height = 3.23" Flange Opening = 4 7/8" Assembled and tested in Racine, WI USA Fully assembled, pre-wired & DIY installation. 1 year replacement warranty.