At 2ft by 2ft, you don't need an oscillating fan, sure its a bonus but just stick a regular small 4-6in clip on fan of in a corner, or if wanting to have a bit more circulation and in a second fan pointing a different direction, and that will easily take care of your needs.
but by your later post, what is your exhaust fan, as so long as your can exchange enough air you can keep things around ambient, also what are you doing for intake as well, as a circulation fan in a bad setup is more of a stop gap when other things should be addressed.