RANDOM ROUND PERFORATIONS CREATE A DRAMATIC VISUAL ELEMENT Product Details: Perforation: 8mm – 15mm – 20mm Panel Thickness: 1/2″, 12.5mm Non-Woven Fabric: Charcoal Gray Open Rate: 9.9% NRC up to .85 Board Sizes: 1200 mm x 1875 mm 1200 mm x 2500 mm Product Data Sheet: Strata 8-15-20