8' L x 4' W Aluminum Dock Frame Assembly W/O Decking by Patriot Docks®. The aluminum dock frame assembly easily bolts together forming a 4' x 8' frame section. The 12" high trussing on the side rails provides more land for the vertical supports making for a very stable pier. The extra truss space allows waves to pass freely through the dock frame during inclement weather. Combine multiple frames to achieve the desired length and configuration, then add a 4' End Rail (PN 10803) to complete the lake end of the last section of dock frame and patio sections. The minimum support span is 16 ft between vertical supports. Assembly hardware is included.