AC Fans /DC Fans /Blowers /WireFanGuards /PlasticFanGuards /FanPowerCords /FanFilters Plastic Fan Guards Back Part Number: Qualtek 09325-G For use with fan size Mounting Hole Center (M/C) Mounting Hole Dia. 4 Places Width (W) 4 Places Thickness (t) mm in mm in in in in 80 3 1/8 71.4 2.81 .15 3.15 .250