... absorption tested 4) CE Approval Aluminum ceiling tiles Lay-in tiles -----PRODUCT DESCRIPTION: Lay-in tile:Size: 595x595mm(down size:574x574mm), ... I Grid or 15T black gooved tee (RAL9003 White) Lay-on(flat lay-in) tile:Size: 595x595mmHeight:18mmThickness:0.5~1. ... Grid or 15T black gooved tee (RAL9003 White)Lay in system: Flat lay in (lay on) system: Two different installation instructions: Should ...