I built set of removable swinging doors for my Hunter 27 back in 1983. Loved them, they fitted over the companion way boards. I used two sheets of teak plywood screwed together with screen sandwiched between. I cut a rectangular hole on the inner piece. I used a table saw with the blade at 45 degrees to cut slots in the outer piece. Trimmed all the edges with teak veneer strip using resorcinol glue. I also made the liftoff hinges. I bought a stainless strip hinge from McMaster Carr with no screw holes. I cut it apart and welded the pin in place on one half by just fusing it with a tig torch. Then I drilled the screw holes where I wanted them. I'll probably build a set for this boat, much more livable.