The Flat-Plate system comprises an insulated, weatherproof box containing a dark absorber plate under one or more transparent or translucent covers. Water or conducting fluid passes through pipes located below the absorber plate. As the fluid flows through the pipes it is heated. This collector, although inferior in many ways to evacuated tube collectors, is still the most common type of collector in African and some Asian countries. Feature: 1.DIMENSIONS: 1975 x 975 mm 2.WEIGHT: 42 KGS 3.COLLECTOR: Closed circuit copper tube type 4.ABSORBER PIPING: Vertical risers 12 mm (outside diameter) copper. Horizontal headers 22mm (outside diameter) copper. 5.WORKING PRESSURE: 0.6Mbar 6.INSULATION: Polyurethane 20mm (40 kg/m3) cast under pressure. Gives rigidity and humidity protection. 20mm Rockwool 7.CASING: Aluminum profile epoxy powder oven painted Free of screws and rivets. Sea Water resistant. 8.GLASSING: Tempered low iron glass 4 mm. 82% transmission.