Dryer Vent Hose for Tight Space The 90 degree dryer vent elbow fits all types of 4 inch dryer vents over 1.35 inches in length. It can better solve the problems of large space occupation, dryer vent hose extrusion deformation and tearing caused due to the long dryer vent hose, while also promoting airflow and efficiency. Six-Layer Thickness The Dryer Vent Hose is made of 6 layers thickness (2 layers of aluminum foil, 2 layers of PET, steel wire, and PVC) for durability, The hose steel wire diameter is 1mm prevent deformation. The PVC film helps to be light-proof, noise reduction and Insulation. Good Sealing Effect The dryer duct connector space saving dryer vent, much easier to install and better sealing than magnetic dryer vent connector. Dryer vent connector kit comes complete with connector transparent sealing ring, sealing tape and hose clamps.