Contacted Beckson.com, they are manufacturers of the vent.
They have a part kit C-6D that replaces the original plastic parts.
Waiting to here where I can order from, not listed on Amazon or at West Marine.
Just replaced foreward hatch vent. Nice that the same vents are still made. Pretty easy job however, the new screws are a different length then what was there previously and some of the plexiglass has chipped away. The newer Vent-O-Mate has very minor improvements over the old one. The old plastic pieces pretty much turned to sand when I touched them.