18 In. Heavy Duty Exhaust Fan, High Performance Totally Enclosed Motor gable fan Efficient attic ventilation delivers 51

Efficient attic ventilation delivers 51 sq

Hi-pressure pump is only compatible with model CDHP1840GRY

This rear grille is powder-coated in a black finish for durability and is easily swapped with your old grille using common household tools

rodent-proof metal mesh screen and a weather-defying design to keep out insects

Requires 10 - 12 sq

18 In. Heavy Duty Exhaust Fan, High Performance Totally Enclosed Motor gable fan Efficient attic ventilation delivers 51Provides ventilation by moving air up to 3,000 CFM Fully assembled with plug in design Uses a rough opening of 20. 75" x 20. 75" Reinforced rust resistant galvanized steel housing with removable interior grille Pre drilled holes on flange and rolled flange edges for safe and easy installation Automatic shutter with added louver stiffeners prevents drafts from entering through the external opening OSHA compliant grille and totally enclosed, energy