... 1. 300x300, 400x400, 500x500, 600x600, 300x1200, 600x1200 2. perforated suspended aluminum ceiling for building contractor perforated suspended for building contractor aluminum ceiling tile ... outdoor polyester powder coating, film surface finish.3) Surface style: perforated(dia.1.8mm, 2.3mm, 3.0mm, 5.0mm), non ... -perforated.4) edge type: clip-in, lay-in.5) Size: 300x300 ...