Aluminum ladder, OSHA rated 300-lb. Special Duty. Meets or exceeds ANSI 14.2 specifications. Composed of aluminum construction frame with top cap that attaches to top of keel beam in wheel well area. Rubber padding on back rails and treads protects aircraft surfaces from damage. Equipped with two (2) LockNStands to provide durable comfortable for extended standing. (Do Not Stand) stickers placed above safe stand area. OSHA/ANSI 14.2 compliance.