Features: 1) The design of this type uses the all-glass evacuated solar collector tubes as the heat-absorb element. 2) Easy plug-in installation 3) Outer tank material: stainless steel plate or powder coated color steel sheet Key specification: 1) Inner tank: stainless steel SUS304-0.4mm 2) Vacuum tube: Ñ+47 x 1,500mm, Ñ+58 x 1,800mm 3) Tank diameter: 410mm, 460mm, 490mm 3) Outer tank: colored steel-0.4mm 4) Insulation: polyurethane 50mm-60mm 5) Frame: coated galvanized steel-1.5mm/stainless steel-1.5mm Type Area( º¦ ) Vacuum tube Volume(liters) Gross wet(kg) 20GP/40GP/40HC loading Qty(sets) ¿¬(mm) Length(mm) Qty(pcs) LC47/1500-15 1.87 47 1500 15 80 53 56/118/134 LC47/1500-15 1.87 47 1500 15 110 55 52/114/128 LC47/1500-18 2.25 47 1500 18 100 60 48/104/118 LC47/1500-18 2.25 47 1500 18 150 65 40/88/100 LC47/1500-20 2.50 47 1500 20 110 67 45/96/108 LC47/1500-20 2.50 47 1500 20 165 72 38/80/92 LC47/1500-24 3.00 47 1500 24 130 75 38/84/96 LC47/1500-24 3.00 47 1500 24 200 80 34/70/78 LC47/1500-30 3.75 47 1500 30 160 85 34/70/78 LC47/1500-30 3.75 47 1500 30 245 91 30/64/68 LC47/1500-36 4.50 47 1500 36 195 98 28/61/70 LC47/1500-36 4.50 47 1500 36 300 105 26/54/60 LC58/1800-12 2.24 58 1800 18 100 45 48/100/116 LC58/1800-14 2.60 58 1800 14 120 50 42/88/100 LC58/1800-16 3.00 58 1800 16 140 58 38/78/84 LC58/1800-18 3.40 58 1800 18 160 65 36/76/80 LC58/1800-20 3.70 58 1800 20 180 70 32/68/72 LC58/1800-24 4.50 58 1800 24 220 78 26/56/20 LC58/1800-30 5.60 58 1800 30 280 95 22/46/52