Used aluminium portholes opening
glass                hole                total         price ex btw
30 cm               35 cm            45 cm        €100 not in stock
35 cm               40 cm            50 cm        €125
40 cm               45 cm            55 cm        €150

10 brass portholes plus cover iron €500( one with cover brass €600)
​glass 30 cm / hole 35 cm / total 45 cm 

6 cast iron portholes with cover; in loose parts with toughened glass €150