That is the correct method. It makes a very nice and clean installation You
got a super deal at 750 Euros for 12. How large are they? I have 13, 8" x
16". I paid 5,000 pounds sterling 15 years ago, but they came glazed,
polished and with deadlights.
Steve


wrote in message
oups.com...
Steve, thank you very much for response. My portlights are from bronze
and are already cast (in Hungary, 750 euro per 12 pcs, but glazing and
polishing is on my side). I am thinking of installing them in outer
sheet metal sealing them with sikaflex and weld a bit oversized tube of
steel to the inside , long enough to pass through the thickness of the
hull. This solution seems it will work, however being in the boat one
will have a porthole in 4 inches deep well. Thanks once again-Przem