simple box,no hinges, no hardware.   2 1/2" tall,  6-7 inches long by 3 inches wide.   Wall thickness is 1/4".    Top is supported by the cross slats.   Pushing down on either end of the top raises the other end or lift it up.     Kids like them.    easy to make.    These are variable size slightly due to the piece of wood made from.   Did not bother to make them all exactly the same.  Coat of wipe on poly.  

Ron