If I am building a 4x2x2, how do you actually measure those dimensions?
For example, for height, would it be measured from floor to ceiling on the inside only, same for 4 foot sides?
Or is it from outside edges?
I think it's typical to measure outer dimensions, but I'm not certain. Since you're building it on your own, if you are consistent witch whichever standard you pick, it should work out just fine. I would probably opt to measure inner dimensions just to provide as much extra space as possible =)