These high-temperature air ducts and blower will maximize your Hot Vent Pro 70 heater. Simply place the hot-air tube inside your shelter, attach air ducts to your heater and attach the input air duct to the blower. You will have hot air flowing in seconds. The rugged 115-volt blower has impact-resistant housing and easy-to-operate on/off switch. Air ducts come in a convenient storage bag for easy transport. Blower dimensions: 13”L x 15”W x 15”H. Air duct dimensions: 8” diameter x 6'L. Weight: 19 lbs.