The Enviro World 55 gal. Recycling Bins Red combine toughness and economy in a large capacity unit.. Sleek flat back square design fits naturally in any location, High quality injection molded easy to keep clean and look new year after year. The Enviro World 55 gal Bin is focused, for two reasons: it allows the unit to hold a large capacity in a small footprint, and the units can be stacked together for transport or storage.