Undersea Backdrop (3 Pcs. Per Set) Assembled, 9 Ft. X 6 Ft. Plastic From front door to ocean floor! Featuring a photographic scene of ocean life, this Undersea Backdrop makes a wonderful background for a custom photo booth at your party. This plastic party decoration comes in 3 pieces to help make it easy to assemble. (3 pcs. per set) Assembled, 9 ft. x 6 ft. Simple assembly required.