I received this reply from sailboatowners.com :
Hi Randall,
I am assuming the forward hatch in his 35.5 is an unframed rectangle of plexiglass that closes flush with the deck. If that's the case, the hatch was assembled by Hunter from components purchased from several suppliers. Unfortunately, the supplier who made the trim ring is out of business and the mold no longer exists.
That said, if the hatch says Lewmar or Bomar o the lens let us know, he may have something else on his boat which can be replaced.
Let us know if we can be of assistance.
Phil H.
SailboatOwners.com