... , thickness: T15/T12/T18mmTolerance: for length±2mm, for width±0.1mm Application1. Professional space for timbre effect and decoration: Studio, ... room, listening room, rehearsal hall etc.2.Recreational place for sound effect and decoration:Theater,cinema,indoor gymnasium, disco ... , office,hall and hotel etc. 4. Noisy industry for health and environmental protection:Airport,railway, bus station,factory ...