✅ PVC Flexible Duct Hose is produced by reinforcing multi-layer laminated aluminum and polyester material with high tensile spiral steel wire. Our hose is leakproof and has extremely high flexibility, bending and compressibility.
✅ The inner layer of duct hose is made of fire/flame retardant, durable aluminum foil while the outer layer is made of black thermoplastic PVC, which protects the aluminum from cuts and tears while preventing leaks.