More than likely door brand specifc due to the locking mechanism for the door. I assume you do not know the manufacturer of the doors? The blinds between the glass and attachment method for the interior glass panel would lead me to start with a manufacturer by the name of Pella and see what they use for hardware. Hoppe Hardware tends to make a lot on the door manufacturers hardware and very well may for Pella. But I am not certain as I have never sold Pella.

Thank you for the response. I checked and it does look to be a Pella. I called and apparently this particular lock and handle were specially made for this door and are no longer made. The lock and handle were built into the door and so they cannot be replaced. They said if it ever truly needed to be replaced, the whole door (which apparently cost 6-7k originally) would need to be replaced. Ouch. Thanks again for your input.

Call a locksmith. They may be able to help but, and it really would only be a phone call. You might get lucky!