I am selling an electric fan with shroud.
measures appx 18" tall x 20.5" wide ,
the diameter of the fan looks to be right around 16".
the overall width at the thickest point (center motor) is under 2.5"
Also if you notice the fan is offset to one side, I believe this is to give you more clearance from the tip of your waterpump.
I do not know the brand of this set up , the back of the fan says TRIPAC. after doing a little research on the internet it looks basically identicle to a Cooling Components #CCI-1730 . If it is a CCI-1730 those are rated at 3000cfm with a draw of 56amps and is a puller , The CCI-1730 retails for around $560 after tax.!
I will sell for $250 , this is 60% off current retail.
first come first serve , reply if interested