Four pocket doors....that's what we got with our house. If I count EACH door individually....two big openings really....but I like to embellish. ;-) I've thought a lot about all the people who have slid these doors open and closed...and for what occassions...in what seasons...and what little treasures have rolled, slid or been pushed through the openings in the wall. In fact we've laid on our bellies with flashlights trying to peer in. Marbles and dust...that's mostly what we saw. Then there is the wall thickness that emcompasses a pocket door...I think those walls must hold up our WHOLE house. They are thick.
My pocket doors charm me. I can't help it.