Fits Enviro Pellet Stoves: EF2 EF3 EF4 EF5 (Evolution) Empress FS Empress FPI Meridian Milan Mini Solus Windsor Enviro part# 50-901 Replaces part # EF4i-007, EF-007, EF5-114 50-473. Ultra Quiet Engineering - If you want Peace and Quiet with Low Vibration You found the right motor. This motor is so quiet; you wont know your stove is on. Estimated Lifespan: 15-20 years. Fasco uses the highest standards of engineering with parts calibrated within 1/10,000th of an inch. The room for error is so small is has to be checked using a microscope. Your new motor is designed for Variable Speed which requires high quality electronic components not included in other motors. High temperature rubber bushings and washers are used to Damper Vibration. A FREE high temperature micro fiber low vibration gasket is included with you motor to insure you have the highest quality item available anywhere. Go Green. In accord with new environmental standards your new motor is more efficient so it cost less to run. Wiring - Your new motor may have a electrical plug that is different from you old motor. Cut the new plug off and splice the wires to the old wiring using your choice of electrical connector. It doesnt matter which wire goes to which as long as they are connected.