【330LBS WORKING CAPACITY】- Weight Capacity: 330 lbs. We designed three wider steps to provide great comfort and stability. Step Dimension: 18''x4''. The height between every two steps is 12". 【ALUMINUM STRUCTURE】-The 3-step dock ladder is built by quality aluminum material, with a matte finish with an excellent grip, anti-corrosion, and anti-rust. The lightweight materials make this more portable for you. 【ANTI-SKID HIGH STRENGTH】- We especially provide the rubber mat for each step to prevent accidental slipping and injuries. The reinforced dock steps get you in and out of the water with maximum safety. 【ADJUSTABLE DESIGN】- Height is adjustable from 41" to 53". The sliding design provides the convenience of a permanently mounted ladder—easy and quick setup using a 304 stainless steel mounting kit. 【VERSATILE USE】- This aluminum boat ladder is designed to do most boarding jobs. Whether you're planning to take it on your ship, put it at the end of the dock or use it on a swim raft.