Fan Guards: Type - Fan Finger Guard; Size - Fan - nominal - 120mm (4.7 in); Size - Mounting Hole Centers - 105.0 mm (4.13") O.C.; Size - Dimensions - 115.6 mm (4.55" ) Dia.; Material Type - Steel Wire; Material Finish - Nickel Chrome; Guard Configuration - (8) Rings; Use With - 120 mm Dimensional AC/DC Fans; Manufacturer Series - 08 Series