Our shopping carts are designed to nest into each other and has a capacity of 500 lbs. The decks are replaceable and can be ordered separately. Decks are 24″W x 42″L and are galvinized for durability. The top deck is hinged so that it can be lifted to allow taller plants to be placed on the lower deck. The space between decks is 18″ The lower deck is designed to be removed easily for cleaning and replacing. Convenience baskets can be ordered separately.The 6″ casters are fixed on the rear and have a brake, while the front swivel.