The DRIPLOC RT 360 System 12"W X 58"L filter section which fits not only the DRIPLOC RT 360 Grease Containment System Models #4412 & #3312 but also retrofits other OEM system. Filter media - 5 layer design - Top - 3/8" passthrough layer - Middle - 4 layers of heavy oil only mat material (1" Total) WARNING : This product can expose you to chemicals including Antimony Trioxide and Formaldehyde, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov .”