The 18" x 24" clear opening dimension provides a comfortable crawl-through access opening.
Standard models have a cast aluminum cover, aluminum dogging mechanism and your choice of cast aluminum, steel, or stainless steel rings.
Freeman Marine;s uniformly spaced dogs are superior to the "yoke" or "strongback" type seal mechanisms which can cause cover distortion and sealing problems.
Utilizes a sealing pressure requirement formula which ensures proper sealing tension with the required number of dogs
Every hatch has a stainless steel handle and round bar for trouble-free operation
Sizes reflect size of clear hatch opening