Saftron PTL-224-3S-GG 24" x 60" Graphite Gray Trition Series 3-Step Ladder 0.25" Wall Thickness, High Impact Polymer Exterior & Aluminum Interior. Our Triton series was designed to give you a custom designer look that will also enhance the look of any pool or deck, without the high cost associated with custom pool rails. The Triton Pool Rail Series is fully reinforced with marine grade aluminum and is made from our signature high impact polymer, providing strength and durability throughout the years.