Fan Guards: Type - Fan Finger Guard; Size - Fan - nominal - 200mm 7.87 in; Size - Mounting Hole Centers - 240mm 9.45 in O.C.; Size - Dimensions - 215.0mm 8.46 in Dia.; Material Type - Steel; Material Finish - Nickel Chrome; Guard Configuration - 13 Rings; Use With - 200 mm Dimensional AC/DC Fans; Manufacturer Series - MG-200