Louisville Ladder FM1104HD 375-Pound Duty Rating Fiberglass Rhino Twin Front Ladder, 4-Foot Fiberglass is non-conductive when clean and dry 375 Lbs, load capacity, includes weight of user and tools Double-rivet step construction, each step secured with six, large headed, semi-tubular steel rivets for maximum strength, 30% greater shear strength than solid aluminum rivets Heavy double gusset bracing on each step and angle back brace The ladder meets or exceeds the safety standards set by ANSI, American National Standards Institute and OSHA, Occupational Safety and Health Administration