Porthole frame replacement

[joepal0203]

Does anyone know where I might get replacement porthole frames for my CP16-1? They are very small (~4in dia)and I haven't seen anything on line that might fit the existing porthole cutouts. I believe the original parts were

RA00P0460 PORTHOLE FRAME ALUM-16 $32.50 EA.
RA00P0461 PORTHOLE FRAME S.S.-16 $49.40 EA.

[soilgod]

These might work.  Defender Marine is a source, probably West Marine also.  Beckson Newport Round Fixed Port
Item: #1014987 | Part Number: PF4RD-WC
$22.99