Hi Renewed,
My port hole pass thru from the galley to the cockpit is bronze, marked PERKO, and is a different size from all the other port holes in the boat. If Perko doesn't make it anymore, perhaps you can get your measurements and try another manufacturer, e.g., Newfound Metals, or find one in plastic if that's what the budget calls for. If it's a bit larger, you can always enlarge the opening in the bulkhead.
Good luck.
Matthew