original black & yellow 4-tier storage shelving unit, indoor/outdoor cx organize your space with the sturdy 4-tier black & yellow storage shelves. strong, durable, and easy to assemble, this utility shelf is ideal for workshop, shed, or garage storage. reinforced shelves hold 200 lbs. each and are ventilated for mold and mildew resistance. neatly and beautifully store eight of our black & yellow 27-gallon tough storage containers to keep tools, household items and sporting equipment secure and off the ground. interlocking design allows multiple shelves to be connected to create the ultimate organization and storage system.