Reaching your evaporative cooler’s optimal performance is easy with this universal rigid media pad. It is well constructed utilizing MasterCool’s premium CELdek media. The unique, multi-layer design makes it the right fit for most evaporative coolers requiring a 12 inch rigid media pad. MasterCool is a registered trademark of Champion Cooler Corporation. WARNING: This product can expose you to chemicals including benzene which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.