... 40, 45, 50, 70 mm Width: 10, 15, 20 mm Spacing: 50*50, 75*75, 100*100, 200*200 mm Thickness: 0.3-0.9 ... mm Length: 3m/pcsFeatures: The system offers a lifetime warranty and provides a clean ... Airport,Subway, Railway station, Bus Station,Commercial Center, Exhibition Hall and Hallway ,Kitchen etc Specification Grille ceilingProduct:Aluminum grille ceiling, grille ...