The Vevor flexible duct hosing is a 12" diameter, 25' PVC ventilation hose designed for use with utility blowers and exhaust applications. It features flexible vinyl woven polyester construction with a carbon wire spring and reinforced adhesive tape for durability. The hose is flame-retardant, portable, and easy to install on compatible extraction-side fan lips. A large storage bag is included for convenient transport and compact storage. It is suited for ventilation use in factories, basements, farms, tunnels, and similar work environments.