Wall Brackets, Fits Square Base Size 26 in, Compatible Grainger Part Number 2RB66, 3ATT8, 3ATT9, 56JN76, 56JN77, 56JN78, 56JN79, 56JN80, 56JN81, 56JN82, 56JN83, 56JN84, 56JN85, 56JN91, 56JN92, 56MW61, 56MW62, 56MW64, 56MW65, 56MW66, 56MW67, 56MW68, 56MW72, 60KT20, 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