Mounting Base, Maximum Load Capacity 500 lb, Includes Mounting Template, Material Steel, Mount Hole Diameter 0.53 in, Overall Height 14.88 in, Overall Width 9 in, Overall Depth 5.06 in, Base Type Wall, For Mast Diameter 3.05 in, For Maximum Span Not Applicable, Compatible with Grainger Part Number 54YM51, 54YM52, 54YM53, 807EZ5, 807EZ6, 807EZ7, 807F04, 807F05, 807F06