Extra room to conveniently keep your truck bed and cab clear, while keeping valuables safe and out of sight. LUND's Steel Top Mounting Boxes double your storage capacity with truck boxes that sit along bed rails for easy access and reserving full bed access for larger cargo. Designed for strength and durability with 16-gauge steel, weather proof gaskets, and locking stainless steel flush mount T-handles Top Mount boxes feature a universal lid allowing left or right mounting. Weather-tight gaskets and front opening doors protect contents from the elements, while the keyed locking T-handles secure valuable tools and equipment. Assembled in the USA and backed by LUND's Limited Liability Warranty.