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 straight ladders are great for seawalls and stationary docks with fluctuating water lines. 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 Stationary Standard-Step Dock Ladder, 7-Step