Product Description1. Material of Inner tank: SUS304-2B stainless steel with 0.4mm thickness 2. Material of Outer tank: Coloured steel with 0.31mm thickness 3. Magnetic-controlled Al-N-Al splash all glass evacuated heat-collecting tubes, fast heat absorbing and temperature risen 4. Heat Preservation Layer: 55mm polyurethane integral foaming, superior heat preservation 5. Material of support: Zinc-plated with plastic spray coating treatment(Anti-ultraviolet)with 1.5mm thickness 6. Packing: Export cartonModel Dia of tube Length of tube No. (pcs) Capability (L) People No. Loading 20 / 40 pcs CHCH-420-1500/47-15 Φ 47mm 1500mm 15 95 2-3 78/156 CHCH-420-1500/47-18 Φ 47mm 1500mm 18 110 2-4 68/136 CHCH-420-1500/47-20 Φ 47mm 1500mm 20 125 3-4 60/120 CHCH-420-1500/47-24 Φ 47mm 1500mm 24 150 3-5 50/100 CHCH-420-1500/47-30 Φ 47mm 1500mm 30 185 4-6 40/80 CHCH-470-1800/58-15 Φ 58mm 1800mm 15 135 3-4 52/104 CHCH-470-1800/58-18 Φ 58mm 1800mm 18 162 3-5 43/86 CHCH-470-1800/58-20 Φ 58mm 1800mm 20 180 4-6 38/76 CHCH-470-1800/58-24 Φ 58mm 1800mm 24 216 4-7 32/64 CHCH-470-1800/58-30 Φ 58mm 1800mm 30 270 5-9 25/50