RANDOM ROUND PERFORATIONS CREATE A DRAMATIC VISUAL ELEMENT Product Details: Perforation: 12mm – 20mm – 35mm Panel Thickness: 1/2″, 12.5mm Non-Woven Fabric: Charcoal Gray Open Rate: 9.8% NRC: Up to .85 Board Sizes: 1200 mm x 1875 mm 1200 mm x 2500 mm Product Data Sheet: Strata 12-20-35