Photo 1 of Crispaire 4 inch 260CFM Radon Mitigation Duct Fan Kit IP67 Waterproof, 2600RPM Ultra-Quiet and Energy-Efficient Ventilation for Indoor/Outdoor Use

Double tap image to zoom

Photo 1 of Crispaire 4 inch 260CFM Radon Mitigation Duct Fan Kit IP67 Waterproof, 2600RPM Ultra-Quiet and Energy-Efficient Ventilation for Indoor/Outdoor Use