NOTE: Rebate only valid for purchases made through December 25th.
Corsair Carbide Series SPEC-01 Black ATX Mid Tower Gaming Computer Case - Free Corsair Case Fan w/ purchase @ Newegg - $34.99 AR/FS
Free Case Fan - Corsair Air Series AF120 LED 120mm Quiet Edition High Airflow Fan Single Pack - Blue - value $11.14
Add the case to your cart, and the free fan is automatically added.
Also note that the free fan is a blue LED, while the fan included with the case is red LED, so a bit of an odd combo since the colors don't match.