Commercial heavy duty open front less cover with 304 stainless steel hinges. White round front with 304 stainless steel hinges. Commercial round open front less cover. Injection molded durable polypropylene plastic with uv protection. External check hinge stops at 11 degrees beyond vertical. Ergonomical comfort curve seat design. 304 stainless steel hinge posts and hardware. Built in bumpers. Non-skid rubberized pad. White round front with self-sustaining 304 stainless steel check hinge. External self-sustaining hinge holds at 45 degrees before and 11 degrees beyond vertical.