The ultimate in strength and durability designed to endure the severest weather conditions. Fabric is 18 oz. white vinyl fire-retardant material. 1/4" thick rope in hem for extra reinforcement. 1/4" x 2" welded D-rings along a 6" hem located every 2 feet. 1" brass grommets in corners. Meets Boston Fire Marshall specifications for temporary enclosures. Color: Milky White.