Hello, I'm looking at interfacing a Crydom HS053 heatsink with a 80x80mm fan, but I'm a bit confused by the datasheet. The datasheet of this heatsink says that it accepts 1-80mm fans but there doesn't seem to be any screw holes to attach an 80 mm fan. There are screw holes dimensioned 127x140mm apart but I kinda doubt those are for a fan...