Abstract: A box of cardboard, paperboard, fiberboard or the like assembled from a single, die cut blank comprising a bottom wall, side walls, front and back walls, and a swingable top closure. The side walls are provided with inturned flanges underlying a flange extending rearwardly from the front wall which latter contains outwardly projecting stops. The top wall carries locking tabs for restrictive abutting relationship with the proximate stop and which tabs embody tongues lockingly engageable in openings in said side wall; there being abutments for limiting lateral shifting of said top wall when the box is closed.