Dundas Jafine White Vinyl Flexible Ducting, 4 in. x 50 ft. is designed for versatile general purpose exhaust applications, making it i for bathroom fan venting and surface-mounted humidifier units. Crafted from durable white vinyl, this flexible ducting reliable performance while being easy to install and maneuver. Please note that this ducting is not suitable for dryer venting applications. With a diameter of 4 inches and a length of 50 feet, it provides ample coverage for your ventilation needs. Model Number: