MOBILE CONTAINER, STACKING, 15-1/4" X 19-7/8" X 15-7/16", INJECTION MOLDED HIGH DENSITY POLYPROPYLENE, SIX 1/4" DRILL HOLE PATTERN ON BOTTOM ALLOWS FOR EASY HOLE INSERTION FOR DRAINAGE AND AIR CIRCULATION, INCLUDES: (4) 3" POLYURETHANE SWIVEL CASTERS, RED, MADE IN USA