The "Hidden Series" hatch is highly durable and comes with a clean finish (no visible fastener holes). The reinforced ribs make it capable of being stood or walked on for long periods of time. The improved gasketing system provides a watertight seal that will keep everything underneath it dry. This product holds up to the harshest of weather conditions and is impervious to harsh chemicals. All of our products are UV stabilized minimizing degradation from prolonged sunlight exposure. Our superior 316 stainless steel piano hinge system prevents any premature rusting due to saltwater. Superior materials for a superior product.