Hi there!
Does anybody know how to install a porthole that is designed for 1/4
inch (6 mm) thick fiberglass in a steel hull that consists of 1/8 inch
(3 mm) sheet metal on the outside, welded to 3 inch (75 mm) angle iron
and 5/8 inch (16 mm) wainscoating. Total thickness roughly 4 inches
(100 mm). Any advice (preferably with drawings or links to websites)
very welcome. Thanks in advance-Przem