Perfect for easy and stable access to the water, these marine-grade ladders are made of an extra strong 6000 series aluminum alloy to help prevent corrosion. These Flip-Up Dock Ladders have a quick-release safety pin that locks the ladder in the down position and keeps it stored up and out of the way, so it stays clean when not in use. 21" wide. 21" high handles. Extend 12" onto dock. 750-lb. capacity. Standard 2" wide step. 12" between each rung. Mounting hardware not included. Corrosion-resistant 750-lb. capacity 21"" wide | Dockmate Standard 4-Step Flip-Up Dock Ladder