Air Vent 18.3 in. H X 18.3 in. W X 7.5 in. L X 15 in. D Plastic/Steel Gable Mount Power Fan

Installed in the gable end of the house, the Gable-mount power Vent uses a thermostat to help prevent heat buildup and a humidistat ("Plus" models only) to fight moisture buildup inside the attic. It operates 30 percent more quietly than comparable units