The Eagle Group MMNSDB-K/A-21 is a robust 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 an impressive weight capacity of 395 lbs, this bracket ensures stability and durability. Constructed from high-quality aluminum, it is both lightweight and strong, making it an ideal choice for various storage needs. NSF certified, it meets stringent standards for safety and sanitation.