Dockmate vinyl dock edging is molded twice then bonded for extra durability and protection. A tough inner core is surrounded with soft vinyl for extra cushioning against tough docks. Mounting hardware not included. Typical installation requires about 4 screws per running foot, mounted 6"-8" apart at top and bottom. Comes in a 20' roll. 3-1/2"H x 1-1/2"D. Molded and bonded vinyl Comes in a 20' roll 3-1/2"H x 1-1/2"D | Heavy-Duty Double-Molded Dock Profile, Large Edge Guard