Rockwool 600mm x 600mm x 15mm Rockfon Artic A24 Ceiling Tile - 11.52m2 Pack Dimensions Length: 600mm. Width: 600mm. Thickness: 15mm. Edge detail: A24. Pack coverage: 11.52m2. Description A 15mm thick, smooth white, affordable tile, ideally suited for areas requiring minimum Class C sound absorption. With the added value of ROCKFONs stone wool performance, Artic is an affordable solution which creates semi-concealed or exposed grid ceilings providing basic sound absorption. Features Smooth white surface for optimum light reflection. Sound absorption 0.8aw, Class B. Safest A1 fire performance. CE marking. Lightweight to handle and easy to cut and install. Up to 100% humidity resistant and nonhygroscopic. 15 year guarantee. Fully upcyclable at UK factory.