This is a solid wood door - fiberglass is just not the same as a solid wood door. Unfortunately the manufacturer is no longer in business.
Ann Folan
follyn builders & developers, llc

I just went back and looked through past questions and someone else asked about this door last year -- a couple of different companies answered the question. Try Homestead Doors, Inc - they said they can custom make a door and ship it to you. Glasscraft Door Company also posted a response. I have not worked with either of them but might be worth a try - they are both here on Houzz.
Good luck!
Ann Folan
follyn builders & developers, llc

Hello Ann, Do you remember the Hardie Board color of your siding? We love the entire look! Thanks!