Photo 1 of MIDCVFRUN 4 inch Radon Fan Installation Kit -Radon Mitigation System Kit with Rubber Couplers (4 inch x 4 inch) and Air Pressure Indicator Indoor Outdoor IP67 Waterproof

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Photo 1 of MIDCVFRUN 4 inch Radon Fan Installation Kit -Radon Mitigation System Kit with Rubber Couplers (4 inch x 4 inch) and Air Pressure Indicator Indoor Outdoor IP67 WaterproofPhoto 2 of MIDCVFRUN 4 inch Radon Fan Installation Kit -Radon Mitigation System Kit with Rubber Couplers (4 inch x 4 inch) and Air Pressure Indicator Indoor Outdoor IP67 WaterproofPhoto 3 of MIDCVFRUN 4 inch Radon Fan Installation Kit -Radon Mitigation System Kit with Rubber Couplers (4 inch x 4 inch) and Air Pressure Indicator Indoor Outdoor IP67 Waterproof