British Gypsum Gyproc Fireline Board Straight Edge 2400mm x 1200mm x 15.0mm - Gyproc Fireline Plasterboard is a fire resistant plasterboard that consists of an aerated gypsum core with glass fibre and other additives encased in, and firmly bonded to, strong paper liners that are pink. This product is suitable for Drylining, wall lining and ceiling systems where increased fire protection is essential. This Square edged plasterboard is perfect protection for structural steel.