Saftron P-324-L3-GG 24" x 53" Graphite Gray 3-Step Residential Ladder 0.25" Wall Thickness, High Impact Polymer. Saftron's Best Selling In-Ground Ladder is enforced with encapsulated steel which provides superior strength and durability. A high impact polymer exterior ensures SĀFTRON ladders are unaffected by pool chemicals, salt, and sun and remain cooler to the touch. No grounding or bonding required.