Boat round portlight (openable)
D : 27.3 CM Beckson

Using any of these dimensions will determine which Beckson Newport™ you have. The overall dimension is the trim ring or frame size. Please make sure to measure the length of the thru-hull portion with the lens closed to the edge of the trim ring. That will tell you how long a spigot you need. The spigot should be flush with the edge of the trim ring. This will maximize the draining action of the frame.

Size:
8RD

Spigot Dimension
Hole cut size
8-1/2" Diameter
21.6 cm Diameter
Lens OD:
8-1/2" Diamete

Outside Frame
Overall Dimension
10-2/4" Diameter
27.3 cm Diameter
Screen OD:
8" Diameter