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Carefully lift each pre-built and stained wooden shelf box and slide it onto the corresponding pipe supports. The hollow design of the shelves allows them to fit snugly over the pipes, creating the floating effect. Once the shelves are in place, retrieve the small retaining clips that typically come with industrial pipe brackets. Position one clip directly underneath each pipe support where it meets the shelf. Secure these clips to the bottom of the shelf with small screws, using a drill or screwdriver. These clips prevent the shelves from shifting or being accidentally knocked off the supports, adding an extra layer of safety and stability.