. Adjustable clamps firmly secure ladder to rack. Quick and easy to assemble and install. Grips are adjustable to secure extension ladders of all sizes. Heavy duty leaf springs are low over the van roof to reduce overall vehicle height for easy loading and unloading. Zinc epoxy primed for superior corrosion resistance. Chip resistant powder coat finish. Compatibility. Chevy Express 19962017. Ford Transit 20152020. GMC Savana 19962020. Nissan NV 20132020