SEAMLESS CONTINUITY Available Sizes M-1/3 927 (900mm x 2700mm) M-2/6 927 (900mm x 2700mm) M-2/4 1224 (1200mm x 2400mm) Product Details Perforation Type: Micro Square Perforation Size: 3mm Panel Thickness: 12.5mm Color of Non-Woven Fabric: Light Gray Open Rate: 7.1% – 9.8% NRC: Up to .70 Product Data Sheets: M-1/3 927 (900mm x 2700mm) M-2/6 927 (900mm x 2700mm) M-2/4 1224 (1200mm x 2400mm)