large crate parts

This is a large crate - in flat pieces, designed to be assembled by the modeller.  The ends are more or less square shapes, with upward pointing triangles on the back, pointing up.  The top has a T printed on the back; the bottom has a B.  The sides are interchangeable.  In HO scale, the assembled box is approximately 7' 9" wide, 13' 3 1/2" long and 6' 8 1/2" tall.