Another thing I'd be concerned with would be the force required to open the door. If it's too hard for kids, I suspect they would forcefully open the door by charging into them and thus possibly causing damage to the wall as the door swings open .
dna, its a std 920 door on (i would assume) 2 or 3 hinges so it shouldn't be that hard to open.... and my kids definitely know better than to charge at a door enough to cause damage to the wall (which would no doubt have a door stop on it anyway)
So i don't think i need to be worried about that. Thanks anyway.