A beer rack is another term for a home brewery. Most home brewing beer racks or brewing racks have three vessels: a hot liquor tank, mash tun, and a boil kettle. The home brewing beer rack shown below is a single-tier rack that uses march pumps to transfer liquid from one vessel to another at different stages of the brewing process. Each vessel has a separate propane burner beneath it to apply heat when needed.
If you are interested in purchasing a home brewing rack, there are a wide variety of beautiful stainless steel single-tier and multi-tier beer rack models available here:
Here’s an image of the WestCoastBrewer.com home brewing beer rack.