Gyptone Big Line 6 is a gypsum based acoustic ceiling containing line cut-out design perforations with an acoustic tissue backing used to help achieve high levels of sound absorption. Gyptone Concealed Ceiling systems using Gyptone Big Line 6 allow you to create large ceiling surfaces without visible joints. More importantly, the ceilings reduce reverberation time, and improve speech intelligibility in a given room. Key facts Dimensions: 1200 x 2400mm Thickness: 12.5mm Edging: 2 tapered edges Perforated ratio: 13% Hole size: 80 x 6mm Weight: 8kg/m2 NRC: 0.60 Application Suitable for wide use in all types of building, and especially good for areas that need high levels of sound quality, such as auditoriums, conference halls, and karaoke rooms among others. Manufacturing standards GB/T 9775-2008