Abstract: An apparatus to ventilate attic space of a structure such as a home or building is provided. The apparatus includes a flexible air sealer and a fan housing unit. The apparatus is connected to trusses or rafters of the structure. The apparatus is placed directly below a roof vent, with the air sealer creating a seal between the fan housing and the roof vent. The air sealer supports propeller fans located in the fan housing. The airflow caused by the fan directs air into the flexible air sealer, through the openings of the roof vent, and out of the attic space. The apparatus may further include adjustable truss connectors that are removably attached to the air sealer and the trusses to allow the apparatus to be installed between variably spaced rafters.