- High quality construction: Heavy duty, UV stabilized white ABS, anti-corrosion and durable for marine environments. - Size and fit: Overall size 14-3/4 x 14-1/2 inches (375 x 370 mm). Opening clearance 11-3/5 x 11-3/5 inches (295 x 295 mm). Protrusion above deck 0.7 inch (17 mm). Intrusion below deck 1 inch (26 mm). - Easy installation: Supplied with 2 strong recessed handles for easy installation; pre-drilled countersunk fastening holes (screws not included). - Application and finish: Low profile hatch designed for installation on internal or external flat surfaces; the lid hinges 180 degrees and completely covers the mounting flange for an attractive flush finish. - Use scenarios: Ideal for boat projects requiring a flush, low-profile access hatch on deck or cabin surfaces; suitable for accessing storage compartments or equipment on sailboats or powerboats; practical for interior flat-panel access in cabins or bulkheads where a flush, unobtrusive hatch is desired.