Has Variable Speed Control, and Heat Activation. This is not an aftermarket product. The item "Quadra-Fire Factory Fireplace Blower Kit BK-ACC New Quadrafire" is in sale since Saturday, September 9, 2017. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Replacement Parts".The seller is "builderbuddies" and is located in Byron Center, Michigan. This item can be shipped to United States.