Ducting Extension for Portable Ventilation Fans
Ducting adds up to 20' of flexible ducting to ventilation fans. Helps ventilate and cool manholes, tanks and crawl spaces. Ducting is made of 2-ply reinforced polyvinyl that withstands temperatures from -20° to 180°F. Flame retardant for safety. Includes one coupling end for easy attachment to other 20" diameter ducts. Flexible ducting extends up to 20'L and retracts for compact storage and easy transport. Measures 20'L x 20" diameter.