Louisville Ladder AE4228PG Pro Grip Commercial Extension Ladder, 28-Feet, 225-Pound Duty Rating The product is 28' aluminum ii ext ladder 225 lb duty rating The product is manufactured in china Quick latch rung lock Swivel safety shoes D-shaped rungs Modified I-beam Meets or exceeds the safety standards set by ANSI (American National Standards Institute) and OSHA (Occupational Safety and Health Administration) Quick latch rung lock Swivel safety shoes D-shaped rungs Modified I-beam Meets or exceeds the safety standards set by ANSI (American National Standards Institute) and OSHA (Occupational Safety and Health Administration)