Posts and panels are easy-to-assemble to base using included hardware. Made from high density blue polypropylene for a total capacity of 600 lbs. Stacks up to 4 high for a total of 2000 lbs. and includes 4 feet for stacking. Vented panels allow light, air and sprinkler circulation. Feet also allow 4-way forklift access. 1 hinged drop door for easy access to contents. Spring latches automatically lock sidewalls for set-up and quick folding. Bulk containers are shipped flat for reduced shipping., Lot of 1