The Greenmade folding storage crate has some very unique uses. It has a patented rail folder feature that can accommodate letter-size file folders. Consequently, it can be used as a compact and portable file cabinet. It is lightweight and easily folds flat for storage. The InstaCrate is perfect for automotive, grocery, sports, garage, and playroom. The InstaCrate is made of heavy-duty plastic, requires minimum maintenance, and is easy to keep clean. It's also stackable and compact. Extra heavy construction for outstanding durability Folds flat for easy storage when not in use Built-in rails for hanging file folders Multiple uses include home, crafts, storage, car/garage, camping, laundry & more. Folded dimensions 14.25" L x 20.8" w x 2.75"h and Expanded dimensions 14.25” L x 20.8” w x 11.7” h.