Gyptone acoustic ceilings are based on a 12.5 mm specialized gypsum board suitable for most interior building applications where normal levels of fire resistance, structural strength and sound insulation are specified. Gyptone ceilings are produced with Active Air, which is standard in all Gyptone ceiling boards, a patent technology designed to degrade VOC emissions from emitting building materials, paint, furniture, carpets etc. Active Air degrades VOCs, like formaldehyde, into non harmful inert compounds. Active Air can reduce formaldehyde concentrations up to 70 %*. Gyptone ceilings can be mounted in suspended grid system with exposed or concealed grid as demountable or non-demountable boards with smooth surfaces. Gyptone ceilings are easy to install and have a robust surface with high impact resistance. Gyptone ceilings 12,5 mm are available in many formats and edges for optimal design options. The products are Gyptone 12,5 mm, Gyptone BIG 12,5 mm, Tiles 12,5 mm, Gyptone Plank 12,5 mm (corridor).