Keystone Electronics Corp. 4.5" (120mm) Fan Guard 8453

Metal fan guard for 4.5" (120mm) fans, constructed of steel with nickel chrome plating, featuring 0.063 in (1.60 mm) diameter rings and ribs, and a 0.180 in (4.6 mm) diameter mounting hole pattern at four locations. The guard has an outer diameter of 4.380 in (111.3 mm) and a square mounting surface measuring 4.125 in (104.8 mm) on each side.