Made with a heavy-duty anodized aluminum frame that supports a high-impact, smoke acrylic lens, this deck hatch is sure to enhance your sail boat. It features internal P Hinges. Stainless steel riser arm holds hatch lid open in any position up to 90 andlocks in vent position.Quick-acting adjustable tie-down dogsNo sharp corners to snag lines or sailsCE Certified20" x 20"