As far as I know kilns have always been in cubic feet-I'm guessing in you only mean electric ones and cubic feet are a standard so no matter what shape we all know what fits inside. 12x12 x12 is easy to think about as one cubic foot.
Now will it fit thru the door-lets see the standard door is 28 -30-32-36-48 inches wide so what door do you refer to? and as far a shelves many manufactures use all different sizes as thats been a crap shoot at best all these years-like Olympics have there own shelve sizes?? I never have figured shelve size in electrics as an easy thought process
As best I can tell its user figure it out
Maybe Howard can tell us some standards??
I work in a 12x 24 shelve world with cubic feet describing gas kilns-its about time electrics came into this cubic world. I feel the more info the better.
I tend to think in cubic feet as far as space so this is welcome trend for me-like this week I'm loading my 35 cubic foot car kiln again just like last week
Thats 5 small 7 cubic foot electric loads I would have to fire to equal the same output of glazed ware-I'm tired thinking about all that bending over to get to the same place.
They call them coffin kilns for a reason.
( I know the real reason)