perforated FSK facing for sound absonbing material, suitable for TV station, music studio, cinema,music hall, Karaoke room. Hole Diameter: 1.6mm Width: 1.25 m, 1.35mLength: 200m, 120m, 100m, 60m Core ID: 3"(76mm ± 1) Sell Perforated Facing for Acoustic Absorption