1).Aluminum Honeycomb Core for Ventilation/Laminar Air Flow Units/Air Ventilation and Purification 2). Materials: 3003-H18 and 5052 aluminum alloy 3).Thickness of foil: 0.025 to 0.1mm 4).Lightweight, high strength and fireproof 5).Waterproof and nice flatness 6).High shock-proof strength 7).Applications: curtain wall, cleaning room, billboard, shipping decoration, voyage, bus, train, subway and furniture