Improve heat distribution from your Pleasant Hearth Vent Free Fireplace Insert and Zero Clearance Fireplace with Pleasant Hearth's Zero Clearance Fireplace blower. Install at the same time as the zero clearance firebox. Or, if the firebox has been hardwired to include an outlet, this can be added later. To use, just plug in and it will blow the air from the fireplace, optimizing the heat when the fireplace is on. Designed and certified to only operate with Pleasant Hearth Vent Free Fireplace inserts and Zero Clearance Fireplaces.