Perfect for easy and stable access to the water, these marine-grade ladders are constructed from 1.25"ID pipe that's made of 6063 T5 aluminum to resist corrosion. The ladder takes up only 8" on the dock, so it's perfect for small finger piers. Rungs slide up and down allowing the bottom rungs to be kept out of the water to prevent marine growth. The double rung locking mechansim is extra sturdy when climbing out of the water. 21" wide. 2" wide step. 12" between rungs. Rated 665 lbs. per rung. Mounting hardware not included.