Pre-insulated PIR Modified PU Duct Panel

It's made of a layer of silicate modified fireproof rigid polyurethane, foam coated with aluminum foils, and is a new alternative to galvanized ducts. Easy to install, it has a high density, good insulation, low leakage of air (which saves energy), easy to clean, environment protective, non-itchy, and Freon free. Features: 1) Specification: 4,000 x 1,200 x 20mm 2) 80/80um aluminum foil, both sides embossed 3) Density: 50kg/m3 4) Compressive strength: 200N/mm2 5) Thermal conductivity: 0.021 W/m.K 6) Flame retardancy: B1 7) Friction coefficient: 0.0135