What’s the maximum height of a “door”?

Said chazal “Twenty cubits, no more.”

Rav Yehuda: “It’s forty,

Maybe fifty, the sort ye

Imagine that kings would explore.”



(the door (open on the left), of the Vertical Assembly Building, Kennedy Space Center, Florida. The doors of the VAB, the tallest in the world, at 456 feet (about 300 cubits), would probably blow R’ Yehuda’s mind. Picture by LunchboxLarry https://www.flickr.com/photos/squirrel02/40746650433 used under Creative Commons CC-BY-2.0 license)