We got this modern style stainless steel front door when we remodeled our house a few years ago.
The main lock/handle is a mortise. We didn’t realize when we bought it that it’d be imported from Europe, so it might be a “European mortise” if that’s a thing.
The cylinder is definitely Euro style.
Now here’s the kicker: The main lock not only operates a pretty massive deadbolt in the middle of the door, but also a second one near the bottom of the door.
This picture was on the door reseller’s website, and accurately describes how our door works.
We want to replace the main lockset for multiple reasons (functionality, appearance) but don’t know what we’re in for because of the possibly non-standard (for the US) nature of the mortise and because of this internally connected second deadbolt.
Sadly the reseller is unresponsive to questions.
Has anyone seen one like this before? Have any advice?