Lewmar 399600303. The Low Profile hatches have soft styling and sleek looks. They are ideal for use on power craft. Smaller ventilation hatches are suitable for any deck location on sailboats and the larger hatches can even be used as foredeck hatches. The hatch also features Lewmar's unique sealing system allowing easy acrylic replacement. Lewmar s Telescopic Stay features excellent lid positioning and rigid control. The stay allows hatch opening up to 95_ an advantage on smaller to mid size yachts where deck space is at a premium. Overall dimensions: 22-11/16" x 22-11/16" x 1". Cutout: 19-15/16" x 19-15/16"