... flatness,resistance to weathering,and attractive appearance,roller coating ceilings surpass traditional ceilings and thus have been widely ... -in, lay-in.5) Size: 300x300, 400x400, 500x500, 600x600, 300x1200, 600x1200 or customized size.6) total panel thickness: ... standard carton box9) Accessories: spring tee, various type of ceiling grid available.10) Features:easy installation, soundproof, fireproof, ...