The Altus range of hatches feature a sturdy low profile hatch that is only 13/16" above the deck. They are CE classified A II, which means they are designed for ocean use and can be fitted on deck. These hatches are provided with carefully designed hatch adjusters which are both stylish andeasy to operate. The Altus hatch can be opened from inside or outside the boat. They can also be left locked--either completely watertight or in a ventilation position. The frame profile is satin anodized aluminum. The acrylic is 3/8" thick and the color is dark smoke. An interior trim and screen are available separately for each hatch.