... 12mm, 14mm, 15mm, 16mm, 18mm, 20mm4. Edge:adhesive and nails, square edge, tegular edge,concealed edge, shiplap edge, ... sound absorption index.6. Special properties:Hygiene, HYGEAN-bactericidal and fungistatic coated panels7. ApplicationWidely used as suspended ceiling ... rooms, offices, electronic room, precise equipment room and the residential construction industry. fiber board with high quality ...