Ross Ventilation Pole 125/135 For ventilating the crawl space of a house, thus preventing moisture damage and radon problems in ground floorsCan also be used as an inlet air pipeAlso prevents snow, trash and small animals from entering the space in the base floor
Ross Ventilation Pole 160/170 For ventilating the crawl space of a house, thus preventing moisture damage and radon problems in ground floorsCan also be used as an inlet air pipeAlso prevents snow, trash and small animals from entering the space in the base floor
Ross Ventilation Pole 200/210 For ventilating the crawl space of a house, thus preventing moisture damage and radon problems in ground floorsCan also be used as an inlet air pipeAlso prevents snow, trash and small animals from entering the space in the base floor