Werner GLIDESAFE Fiberglass Extension Ladder Overview with Rep - YouTube
Extension Ladder Pulley Assembly Kit Replacement for Werner 31-12 Parts, Compatible with Werner All Aluminum and Fiberglass Extension Ladders, Accessories - Amazon Canada
Werner Part # D6228-2 - Werner 28 Ft. Fiberglass Extension Ladder With 300 Lbs. Load Capacity Type Ia Duty Rating - Extension Ladders - Home Depot Pro