Sitting low and wide to maximize storage space without obstructing the pickup truck driver’s rear view, aluminum Weather Guard Low-Profile side boxes from Knaack range in capacity from 3.1 to 4.2 cubic feet. Low-Profile side boxes, built with heavy-gauge diamond plate aluminum, sit just above the truck’s bed rail in a design that accommodates new pickup designs. An automotive-style latch provides one-touch opening, and an Extreme Protection lock protects against break-ins.