The Quantum Storage Systems PC4026SHELF is a durable and rugged Polymer Mobile Cart Shelf designed as an industrial heavy-duty accessory for the mobile cart. With dimensions of 40" x 26" x 4-3/16" (outside) and 35" x 23" x 2-5/8" (inside), it provides extra storage space and load-bearing capacity for the cart. Weighing 20 lbs and available in gray, the shelf perfectly matches the cart's color. Its detachable feature allows for customization and easy adjustment to suit specific needs. With its industrial-grade design, this shelf enhances the functionality and security of the mobile cart, making it an ideal addition for any industrial or commercial environment requiring additional storage space.