RETEKOOL Aluminium flexible air duct for ventilation system

Aluminum Flexible Duct: 1.Single layer aluminum duct is made of 6.5μm aluminum foil+15μm PET,double layers aluminum duct is made of 6.5μm aluminum foil+15μm PET+6.5μm aluminum.Size can be 4 inch aluminum pipe to 22inch. 2.No need special tools for cutting and it is easy to connect to ducting. 3.In case of fire no toxic gas are emitted, excellent resistance to chemicals. 4.The product has been successfully tested for fire resistance. 5.The product has been successfully tested for pressure. 6.Can be bent in any direction(Small bending radius). 7.Standard length is 10 meters or as customized request. 8.Easy installation with long service life. Ideal for using in general purpose exhaust applications.