Wall Brackets, Fits Square Base Size 22 in, Compatible Grainger Part Number 16D524, 1MBE7, 1MBE8, 2RB65, 4HZ40, 4HZ41, 4HZ44, 4HZ45, 4YY14, 4YY15, 52CD36, 56MW60, 56MW63, 5DVL4, 5DVP8, 5DVR2, 6KWJ9, Material Galvanized Steel, Includes Hardware Kit, For Fan Type Upblast Fans, For Fan Mounting Type Wall Mount, Container Capacity Not Applicable, Compatible Manufacturer Model Number Upblast or Downblast 140-160, For Use With Belt Drive Exhaust Fan, Centrifugal Upblast Direct