POTAUTO MAP 3004C (CF11181) Activated Carbon Car Cabin Air Filter Replacement for CADILLAC, XLR, CHEVROLET, Corvette Spec.: 11.46" (Length), 7.09" (Width), 1.14" (Height); Four-layer fabric (One Carbon Layer) ; Installation instructions included. Applications Where Used: CADILLAC (XLR 04-09); CHEVROLET (CORVETTE 05-19) (See Amazon Part Finder for fitments to your cars) Benefits: (1) Reducing at least 98% of these contaminants (Dust, Pollen, Exhaust Gas, Particles of 5-100 microns...etc.) from the air passing through the filter & entering the interior of the vehicle. (2) Activated carbon cabin filter provide extra protection by absorbingthe airborne agents & allergens. (3) Increase safety through reduced deposits in the fan or on the windscreen, and protect HVAC air conditioning performance. Competitor Cross Reference Part Numbers (for reference only, please check size): AC-DELCO CF139, CHAMP CAF1793, GENERAL MOTORS 15848592, KLEENER CAF1793, CAF7793, LUBER-FINER CAF1793, NAPA 4480, PARTS MASTER 94480, Ecogard XC25623C, Luber-finer CAF7793, ATP GA-15, MANN MC 1045, WIX 24480, FRAM CF11181 *** Change filter every 12 months or 12, 000-15, 000 miles. Check & replace filter if peculiar smell / odors emit from the cabin air outlets, or if the vehicle HVAC system operates with poor performance, or humming, or weak air volume. ***LEGAL DISCLAIMER: The Brand name & Model # (if listed) are for cross reference only. All Brands, Trademarks & Model Numbers remain the property of their respective owners.