I have 2 factory fans on mine on the outside blowing up at the top coil. I also have a dual fan mounted on the coils on the inside fridge coils and like the last poster says we can freeze stuff on in the fridge if we set it to low. I can't get to the 2 fans on the outside to measure them for you sorry they are down in the to far for me to reach. They look like large computer fans though. around 90 mm looks about right. You could always rig a couple in there till the factory replacements get there.
2014 Palomino Columbus 3650TH
435AH 12V VMax Charge Tanks, 520 watt Monocrystilline Solar Array, Morningstar MPPT TS-60 CC,Morningstar Remote,Cotek True Sine Wave Inverter,Cotek Remote Controller,50amp Progressive Hardwire Surge Protector
2015 Dodge 3500 6.7L 4X4
2011 CanAm Commander XT 1000