The PW Portholes are made of hand-polished, anodized aluminum, which keeps them looking new longer. The lenses are "smoke" colored acrylic, 3/8" thick. An optional synthetic mosquito screen is available for this porthole. These portholes are clamped in place by fasteners within the frame, not screwed through the cabinside, so there is no need to drill mounting holes.
PW porthole CE classification: Category A, Area III - superstructure: parts of the boat - other than hull, deck, cockpit, coachroof, etc - on which people do not normally stand