I love those.. cant do it here.. but would love to eventually be able to have a bunker built up north, and use something like that to a safe room that leads down into the bunker through a hatch..
I saw a kitchen island that opened on the side too and thought what a great idea.. if you are in the kitchen and something happens, toss the kiddos down the hole to the bunker.. make it a slide or hidden hatch inside the island. The door just looks like another panel..