Our Pellethead 12189M convection blower distribution fan motor is a top quality replacement for Harman pellet insert and coal stove models. This is a 120V AC, 1500 RPM, 1-20HP sealed bearing blower assembly. This blower motor replaces Harman (HHT) factory part number 3-21-47120. This is a direct replacement for the Harman Accentra Insert, Invincible Insert, and Super Magnum Stoker models. If you have an Invincible Insert, please see our model notations and double check your blower specs prior to ordering. This listing is the motor only; utilize your existing blower housing and save!