Holman Alum Double Ladder Extension Hooks Model 4A814Holman Alum Double Ladder Extension Hooks Model 4A814 Carry twice the ladders with this longer ladder hook. FEATURES AND BENEFITS: Can carry up to two ladders weighing a total of 90 lb and 14 inches tall when stacked flat. Replaces standard ladder hooks and end stops that come with the rack. Increases rack height by 7. COMPATIBLE ITEMS: 4A97L Aluminum Compact Van Drop Down Rack, Passenger Side 4A98L Aluminum Compact Van Drop Down Rack, Driver Side