Need extra storage in your tool shed? The Rubbermaid Large Upright Utility Storage Unit provides the extra space you need and works hand-in-hand with your Rubbermaid Storage Shed.Included with the storage unit kit, are 2 large heavy-duty shelves that can hold up to 25 pounds for ample storage space and the utmost strength. Enjoy the ultimate versatility as well by installing the shelves upright with the included mounting uprights in order to better maximize your shed's space. No drilling is needed as the adapters used to install shelves are specifically designed to attach the shelves to the shed's wall.