RV Sliding Mattress Deck Accessory

A sliding mattress accessory is used with an existing mattress support system coupled to an RV slide-out. The accessory includes a secondary with a fixed head section and a long deck section coupled with a hinge. The system also includes two long sliding rails longitudinally aligned and mounted to the bottom surface of the secondary deck and the top surface of the primary deck used with the existing mattress support system. The system also includes at least one support mounted on the top surface of the primary deck that supports the fixed head section. The two sliding rails and the fixed support are the same height so that the entire secondary deck is elevated approximately 3 inches above the primary deck. A lock mechanism is provided to prevent the secondary deck from moving longitudinally over the primary deck. When assembled, the secondary platform is aligned and registered over the primary deck, and a mattress is placed over the secondary deck.