The Extreme Max Deluxe Flip-Up Dock Ladder is truly the premier dock ladder on today's market. Constructed from high quality aluminum with stainless steel hardware, this ladder is designed to withstand any element a marine environment can dish out. When not in use, flip the ladder to the upright position to help stop damage and lake scum buildup. When upright, two locking pins hold the ladder securely out of the water until its next use. The ladder's 18" wide x 5.5" deep steps and 20° angle are comfortable on your feet and body, while the oversized top step (18" wide x 11" deep when folded down) delivers a sturdy platform for entering and exiting the water. Intended for use in freshwater applications; oxidation may occur in brackish and saltwater. The Deluxe Flip-Up Ladder is available in 4-Step (3005.4116), 5-Step (3005.4119), and 6-Step (3005.4122) versions. Due to the wide variety of surfaces to which the ladder may be mounted, mounting hardware is not included. Ladder contains four mounting holes requiring 3/8" or 10 mm hardware.