Kotap 8.5-ft x 150-ft Fire Retardant Vertical Safety Netting, Royal Blue, Item: SNB-86150FR Roll Size: 8-Feet 6-Inch by 150-Feet Knitted Polyethylene threads (3. 5 oz. per square yard) Meets requirements of NFPA 701 Test Method 1-2010 Edition Hole openings approximately 1/4-inch by 1/4-inch Meets NYC Local Law 61 and OSHA specs