Shock and heat resistant storage unit

A shock and heat-resistant storage unit comprising space parallel side wall panels of foam plastic, each of which contains at its inner side a first continuous groove of predetermined depth which runs parallel to the top, bottom and ends of the side walls and outer and inner second and third continuous grooves of predetermined greater depth than the first groove which runs parallel to the bottom and up the ends of the side wall panels at opposite sides of the first groove to a level substantially midway between the top and the bottom, the outer grooves containing at their upper ends laterals, an outer U-shaped bottom wall molding comprising a bottom panel and integral end panels, the opposite edges of said bottom panel and end panels being engaged within said outer grooves and said end panels having at their upper ends outwardly projecting, transversely extending shoulders interengaged with the laterals at the upper ends of the outer grooves, one of the end panels having at its inner side below the top an inwardly projecting, transversely extending shoulder, said side wall panels and U-shaped bottom wall molding collectively constituting an outer supporting structure which is resistant to heat transfer and shock;

• an inner U-shaped bottom molding comprising a bottom panel and integral end panels, the opposite edges of said bottom panel and integral end panels being engaged within the inner grooves and one of the panels of the inner U-shaped bottom wall molding having at its upper end an outwardly divergent, transversely extending lip and below the lip an outwardly projecting, transversely extending shoulder which rests on the transversely extending shoulder along the upper end of said one of the panels of the outer U-shaped bottom wall molding, said lip providing in conjunction with the end panel at the upper end of said outer U-shaped bottom molding, a transversely extending open locking groove narrower at the top than at the bottom and an articulated closure member comprising a plurality of spaced, parallel, transversely extending narrow slats integrally joined along their longitudinal edges by hinge means and of a length corresponding to a distance between the bottoms of the first groove disposed in the space between the outer and inner U-shaped bottom wall moldings with their opposite ends slidingly engaged with said first grooves for movement in said first grooves from a position concealed within the space between the outer and inner U-shaped bottom moldings to a position covering the open top of the structure, said closure having along one end a latch adapted to be forced into the locking groove to lock the closure in its closed position and a part extending outwardly therefrom which provides a fingerhold by means of which the latch may be engaged with and disengaged from said locking groove and said wall panels having at their inner sides longitudinally spaced, parallel, vertically disposed slots for removably receiving panels to divide the interior into a plurality of compartments and panels mounted in said slots.