Photo 1 of SierraSquad 24 Inch Wall Mounted Shutter Exhaust Fan – 3500 CFM, 1500 RPM High Velocity, Low Noise, Automatic Aluminum Ventilation Fan for Greenhouse, Attic, Shop, Shed & Commercial Use

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Photo 1 of SierraSquad 24 Inch Wall Mounted Shutter Exhaust Fan – 3500 CFM, 1500 RPM High Velocity, Low Noise, Automatic Aluminum Ventilation Fan for Greenhouse, Attic, Shop, Shed & Commercial UsePhoto 2 of SierraSquad 24 Inch Wall Mounted Shutter Exhaust Fan – 3500 CFM, 1500 RPM High Velocity, Low Noise, Automatic Aluminum Ventilation Fan for Greenhouse, Attic, Shop, Shed & Commercial UsePhoto 3 of SierraSquad 24 Inch Wall Mounted Shutter Exhaust Fan – 3500 CFM, 1500 RPM High Velocity, Low Noise, Automatic Aluminum Ventilation Fan for Greenhouse, Attic, Shop, Shed & Commercial Use