High-End Shelf Truck is perfect for both storage and transportation of bulky packages. Sturdy 1-1/2″ x 1/8″ angle iron frame for long life. Reinforced and welded cross-braced frame and twin end frames have a durable enamel finish. Strong 3/4″ thick plywood shelf. Space Between Slats On Upright Frame: Sides = 8.25″ X 24.75″, Rear = 7.75″ X 22″. Assembles easily. Order Additional 3/4″ Plywood Shelf for enhanced versatility. Trucks can accommodate up to 7 total shelves.