ceiling grid 1>Ceiling board model:XL-27 2>Material: aluminum 3>600x600mm/600x1200mm/300x600mm ceiling grid XL-57(Sun) 1. Product description:1) Material: galvanized steel or aluminum2) Size(select optional):600x600mm, 300x1,200mm, 600x1,200mm3) Edge height:20mm, 24mm, 28mm4) Thickness: 0.4-0.8mm5) Coating: normal powder coating,outdoor polyester powder coating 6) Style:lay-in, clip-in or as per ...