Sparco Heavyweight Manila Vertical Filing Pockets Sold as 50/BX. Vertical Filing Pockets feature heavyweight, one-piece Manila construction. Are especially useful for storing and transporting charts, photos and bulky documents that may not easily fit in traditional file folders. Two-ply straight-cut tops are 1/2" high. Thumb-cut sides provide easy access to contents. Top corners are rounded. Filing pockets contain post-consumer recycled material.