Help protect contents from dust and other airborne contaminants. This allows units to be loaded and stored for longer periods of time before being transported. Covers also deter pilferage. Reinforced corners help prevent tears and add greatly to durability of covers. Available in machine-washable, uncoated polyester and waterproof, vinyl-coated nylon models. Coated covers are also specially treated to resist bacteria, odor, mildew and flames. Choice of hook/loop closure or heavy-duty nylon zipper.