So in the computer world, the "mercedes" of fans would be Noctua, a cheaper alternative though and extremely quite as well are the cooler master fans.
Sec let me find a Newegg link, I'm sure Rev won't crucify me for a link to a computer site Hopefully
These bad boys are the best of the best: https://www.newegg.com/Product/Product.aspx?Item=N82E16835608026
These are what I would use though because I'm cheap and find them pretty darn close: https://www.newegg.com/Product/Product.aspx?Item=N82E16835103052
Plus 4 for the price of 1
I use the coolermaster fans on my CPU Heatsinks and have never heard a peep out of them, as I typically set them up in push pull as well.
If you have the room, maybe mount two on each side each blowing opposite directions so:
Left Rear - In
Left Front - Out
Right Rear - Out
Right Front - In
Sec let me find a Newegg link, I'm sure Rev won't crucify me for a link to a computer site Hopefully
These bad boys are the best of the best: https://www.newegg.com/Product/Product.aspx?Item=N82E16835608026
These are what I would use though because I'm cheap and find them pretty darn close: https://www.newegg.com/Product/Product.aspx?Item=N82E16835103052
Plus 4 for the price of 1
I use the coolermaster fans on my CPU Heatsinks and have never heard a peep out of them, as I typically set them up in push pull as well.
If you have the room, maybe mount two on each side each blowing opposite directions so:
Left Rear - In
Left Front - Out
Right Rear - Out
Right Front - In