Brass hatch for boat door. Available in 4 sizes.

D 35.5 cm / D within 29 cm Width 3.5 cm / 8 mounting holes / thickness 5 mm
D 31.8 cm / D inside 25.5 cm Width 3.5 cm / 8 mounting holes / thickness 5 mm
D 30.5 cm / D inside 24.3 cm Width 3.5 cm / 8 mounting holes / thickness 5 mm
D 24.5 cm / D 19 cm interior width 3.5 cm / 8 mounting holes / thickness 5 mm