Replacing my complete Mortise lockset.

This lock was on an exterior to a patio wooden door. The main cylinder is 9.5 inches on the outside, 7 inches on the inside actual cylinder. There were handles on each side of the door.
The door itself is a solid wood with glass in the center. My guess is that this was an original door and the home was built in 1985.

The lockset had the name "The Atrium Lock."
Any help will be appreciated for replacement suggestions.