Open cell Ceiling1)Material: High quality galvanized steel or aluminum alloy 2) Size of standardopen cellCeiling.50*50,75*75,100*100,125*125,150*150,200*200 (U shape) a) Width of the bottom: 10mm, 15mm,20mm b) Height: 30mm.35mm.38mm, 40mm, 45mm, 50mm, 60mm, 80mm c) Thickness:0.4mm-0.8mm d) Surface...