Fan Guards: Type - Fan Finger Guard; Size - Fan - nominal - 60mm (2.36 in); Size - Mounting Hole Centers - 50mm (1.97") O.C.; Size - Dimensions - 53.2mm (2.09") Dia.; Material Type - Steel Wire; Material Finish - Nickel Chrome; Guard Configuration - (4) Rings; Use With - 60 mm Dimensional AC/DC Fans