Fixed hook (rectangular porthole) in bronze & brass, rounded corners.
Brand N.FERHMANN & CO HAMBURG engraved
there by order in larger dimensions.

62/46 cm thickness 4 cm 16 kg Hull Passage 55/40 cm
transparent glass 50/35 cm 20 mounting holes
we select the portholes whose lenses are in good condition. They are never split but can have some small scratches due to 40 or 50 years of use.