Product Info Catalog Material Handling Ladders & Scaffolding Aluminum 20-Ft. Extension Ladder, Aluminum, Type I, 250-Lb. Duty Rating 20-Ft. Extension Ladder, Aluminum, Type I, 250-Lb. Duty Rating 20-Ft. Extension Ladder, Aluminum, Type I, 250-Lb. Duty Rating Request a Quote UPC: 728865015884 Manufacturer: Louisville Ladder SKU: 223974 Model Number: AE3220 20-Ft., Aluminum, Type I Extension Ladder, 250-Lb. Duty Rating, Quick Latch, Safety Rung Lock, Mar-Resistant End Caps, Swivel Safety Shoes, D-Shaped Rungs, Meets OSHA, CSA, & ANSI Standards, Rope & Pulley, Modified I-Beam Construction.