Mighty Cool Pump 5,000 To 7,500 CFM Evaporative Cooler Pump With Grounded Cord & Plug, 120V, Sealed Ball Bearings, UL Classified, 2 Year Warranty, & For Use With Champion Cooler #4001 DD, TV #112-487, Champion Cooler #4001 SD, TV #112-488, Champion Cooler #5000 DD, TV #112-489, Champion Cooler #5000 SD, TV #112-491, Champion Cooler #RWC50, TV #154-146.