There are a few things to consider before installing your floating metal shelves. First, you'll need to decide on the material. Common choices include wood, metal, and glass. Next, you'll need to determine the size and shape of the heavy-duty floating shelves. Once you've made these decisions, it's time to get started. Before beginning, it's important to mark the studs in your wall so that you know where to drill the holes. Once the holes are drilled, simply insert the brackets and screw them into place.