12 in. Dia 800 CFM Power Mill Aura Attic Fan with 12 in. Collar
The attic fan is made of durable rust free aluminum and has 5 manufactured components: the vent head, 4 EC fans, 1 solar panel, vent collar and square flange. It has a 12 in. Dia throat opening with a 2 in. collar height and a 18 in. x 18 in. square flange. The vent head has 3 concentric cylinders with slotted vertical louvers.