Quadrafire cb 1200 Pellet Exhaust Combustion Blower 812-3381. Ultra Quiet Engineering - If you want Peace and Quiet with Low Vibration…You found the right motor. This motor is so quiet; you won’t 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.