1080 CFM economy roof mount attic exhaust ventilator. Galvanized steel construction ABS Cycolac plastic dome. Suitable for 1600 sq. ft. attic. 2.6A thermally protected motor with built-in automatic cut-off. Includes 15A adjustable thermostat. Precision balanced aluminum fan blades for minimum vibration. 6-point suspensions (anchor points) for stability and high wind resistance. This fan requires minimum 600 sq. in. net free area intake vent area. Suitable for up to 8/12 roof pitch. Includes galvanized steel mesh grills to protect against insects, birds, and rodents, yet allows adequate air intake. Easy installation with no special tools required. 2 year limited warranty on all parts.