JCW Sound Insulation Board Supreme 24 Acoustic Insulation Board - 1.2m x 600mm x 24mm | Insulation Superstore®
Soundproofing for Ceilings | Soundproof Ceilings | SRS Ltd.
Frcevzoie 52 special indoor sound insulation board, suitable for sound training room, anchor room, movie theater and all acoustic improvement (black) (Black) : Amazon.co.uk: Musical Instruments & DJ