A carton flow system is a storage rack designed to improve efficiency in warehouses by allowing products to move smoothly through the facility. Many existing carton flow systems use single roller racks which have fewer wheels and are prone to structural flaws that can cause cartons to fall between rows. The Dyna-Deck carton flow system solves these problems with a full wheel bed design, fully adjustable entry guides, and the ability to retrofit existing flow shelves to improve productivity and reduce operator activity in warehouses.