One of our customers is a work-from-home mom with a couple of kids. She recently bought a home with a separate office, but it didn't have a door which she could close to keep out household noises during conference calls.
The opening was something of a challenge, because it was taller than a standard pair of French doors. We added a custom glass transom to fill the extra space, and capped the whole unit off with trim to match the rest of the home.
One of the little debates we had was how to keep the doors closed.
The standard solution for indoor use is to have a pair of dummy knobs and a ball catch.
The nice thing about this setup is that you don't have to fool around with turning a knob or sliding a latch. You can just burst through the doors like a rock star.
Unfortunately some consider the latch itself to be somewhat noisy... and of course it's hard to lock the door to prevent intrusions during an important meeting.
Another solution is to use a slide latch at the top or bottom of one of the doors. This can be tricky if you want to use both doors, because you have to reach up or down and pull on the latch to open the door. It also costs more to install.
But it's quieter, and it's lockable.
In the end, the customer decided on the slide latch.
If you need someone to install an interior door in Asheville, we'll be happy to help.