Holman Clamp & Lock Ladder Rack is uniquely designed to easily lock and secure ladders in place. The clamp arm can be locked to keep your ladders secure while your van is parked on the street. The ladder grips are adjustable to secure extension and step ladders of varying sizes (See Adjustment Instructions in Installation Tab). The low profile assists with loading and unloading and allows access to lower clearance lots. The Clamp & Lock Ladder Rack is installed using wide mounting feet that clamp securely to pre-existing factory drilled holes to provide maximum support and stability while allowing an easy no-drill installation. Holman's Clamp & Lock Ladder Racks are treated with zinc primer and a chip-resistant marine grade powder coat to provide excellent corrosion, rust, and UV resistance.