Flex-A-Lite 420 Dual 12 inch Puller Auto Electric Fans 2500 CFM
For lots of cooling power in a little bit of space, install one of Flex-a-lite's low-profile S-Blade universal electric fans.
They're only 2 5/8 in. deep, but the 15 in. wide x 13 1/2 in. high single fans move 1,250 cfm at 11 amps, while the 26 1/4 in. wide x 15 1/2 in. high dual fans move 2,500 cfm.
The glass-reinforced nylon S-blades make all of that air move quietly and efficiently, and most fans include rigid brackets and through-core installation kits.