450 Lb. Load Rating! Cotterman Series 1000 is our flagship product line. The value added features of this product make it our best seller. Shipped set-up from one of our four locations reduces freight costs and damage. Plus, when it arrives it goes directly in to use. The climbing angle is 59 degrees. The ladder is powder coated with high gloss powder. The steps are 7" deep, with the top step being your choice of 10, 20, or 30". Tread selections are Performa tread for highest slip resistance, expanded metal mesh or Grip Strut for heavy industrial environments. The load rating is 450lbs. One through four step ladders have spring loaded casters that retract whenever weight is applied, immobilizing the ladder. Five step and up have our Safelock system. This series covers one to eleven steps.