Designed in order to protrude from the deck for only 23 mm and to offer a guaranteed tightness thanks to the perfect coupling of the profiles. Version with inner flange upon request. One or two manual compasses allow to adjust the opening in any chosen position. The frame is manufactured in primary alloy of extruded aluminium. Methacrylate 10-mm thick in grey colour, the skylights can be anodised, painted in RAL colours or stainless steel. The skylights can be supplied also in measures different from the ones in stock.