ProGrip, 24', Aluminum, Type II Extension Ladder, 225 LB Duty Rating, Quick Latch, Safety Rung Lock, Mar-Resistant End Caps, Swivel Safety Shoes, D-Shaped Rungs, Non-Marring, Slip Resistant, Hand Grip, No More Wrapping Your Ladder In Towels, Meets OSHA, CSA & ANSI Standards, Rope & Pulley, Modified I-Beam Construction.