This complete dryer venting kit includes a dampered vent hood with bird and pest guard, 4 in. x 8 ft. flex duct, two metal worm clamps and our proprietary Airtight technology pipe. This product operates quietly for maximum exhaust air flow and includes a bird guard to help keep birds and pests from entering the home or outdoor dryer vents. Both the vent hood and bird guard are durable, weather-resistant and include a UV inhibitor to prevent sun damage and cracking. The Airtight pipe improves air flow and appliance efficiency to help reduce drying times and prevent moisture from leaking into your home.