All aluminum wide mouth hood includes standard tail piece. Vent is 4" in diameter and it allows a full 4" opening, and is dampered. 10 per case.
4" metal screw type clamp joins vinyl hose to pipe, vent hoods, etc. Use with 4" vinyl hose only.
4" flexible aluminum duct is 8' long. Use in areas where heat is evident. Great for range hoods, bath vents or laundry. Intended for temperatures from 100 to 400F. Hoses are shipped compressed.