Is the total volumetric output from the miners less than the 3500cfm of the exhaust duct?
yeah those miners do about 225-240 cfm x 10 = 2250 - 2400
@ op maybe it works how cold will the intake air be?
and is your intake big enough to allow at least 3000 cfm?
my advice would be run 5 in the case/enclosure
run the exhaust at 3500 cfm speed
and add one at a time till it either works or is too hot