AC Fans /DC Fans /Blowers /WireFanGuards /PlasticFanGuards /FanPowerCords /FanFilters Plastic Fan Guards Back Part Number: Qualtek 09450-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 120 4 1/2 104.8 4.12 .18 4.65 .279