Tongue Boxes that fit a standard 20lb Propane tank

I'm having a doozey of a time finding a tongue box that will fit a 20lb propane tank.
Typically 12" in diameter and 18" tall. (I'd like a little wiggle room though.)
So anyone know of any that would fit? (Preferably Aluminum diamond plate but I'd consider any)
Typically 12" in diameter and 18" tall. (I'd like a little wiggle room though.)
So anyone know of any that would fit? (Preferably Aluminum diamond plate but I'd consider any)