The Eagle Group MMDB-K/A-21 is a durable double knob shelf bracket designed for cantilevered shelving systems. Measuring 21 inches in length, it effectively supports two adjoining wire or solid shelves on a common upright. With a robust capacity of 395 lbs, this bracket is constructed from lightweight yet strong aluminum, ensuring both stability and longevity for your shelving needs. Ideal for maximizing storage space in various settings.