Abstract: The storage shelf of the present invention is comprised generally of a flat horizontal bottom panel having opposed ends and opposed lateral sides; a flat horizontal middle panel parallel to and spaced above the bottom panel having opposed ends and opposed lateral sides; a top horizontal panel parallel to and spaced above the middle panel having opposed ends and opposed lateral sides; a first pair of upstanding opposed side walls about the perimeter of said bottom, middle and top horizontal panels; a second pair of upstanding opposed side walls about the perimeter of said bottom, middle and top horizontal panels; and a plurality of male and female connectors for individually engaging opposite ends of each respective one of said side wall members with the adjacent respective opposed ends and opposed lateral sides of each of the horizontal panels whereby each of the side walls is securable in an upright position.

Abstract: The roll comprises a rotatable arbor (1) with an annular sleeve (7) shrunk onto it. There are internal passages (25) in the sleeve for the flow of liquid coolant there along. The internal passages are in communication with ducts (19, 21) in the arbor and the liquid coolant passed along the passages from the ducts forms a thermal barrier in the sleeve between the outer periphery and the interface.