The Fire Resistant Fissure Mineral Fiber Ceiling System is recommended to be used in general office areas, public buildings, educational institutions, gymnasia, retail outlets, etc. Minwool Rock Fibres Limited offers Fire Resistant Fissure Mineral Fiber Ceiling System. Minwool Rock Fibres Limited manufactures Rock Wool or for Thermal Insulation [Hot and Cold] and Acoustic Insulation, and Mineral Fibre Ceiling Tiles. The Fire Resistant Fissure Mineral Fiber Ceiling System of model name `Insula` comes in 13, 15 & 19mm thicknesses and in Square, Standard Tegular and Fine Tegular edges in size of 595X595mm or 595X1195mm.