Lens replacement
John,The degree of difficulty and convience of replacing acrylic varies greatly with the type of hatch.Low/Medium Profile Hatches require that you order a replacment that will come with a new acrylic and a seal that is bonded to the acrylic. The frame separates at the screws on the lower side and the new bits slilde into where the old acrylic was. These hatches were launched in 1998, and are what Hunter currently use on several models. If they are LP then you should see those joining screws on the under side of the frame.If they are not LP, then the acrylic is chemically bonded to the frame, and has to be installed in a controlled atmosphere. This requires that the lid be removed and sent in for repair.. We have 'authorized' service centers available on our website that would be happy to help.www.lewmar.com