POTAUTO MAP 4005C (CF9785) Activated Carbon Car Cabin Air Filter Replacement for MERCEDES-BENZ, CLS Class, E Class Spec.: 12.24" (Length), 10.12" (Width), 1.34" (Height); Four-layer fabric (One Carbon Layer) ; Installation instructions included. Applications Where Used: MERCEDES-BENZ (CLS500 2006, CLS55 AMG 2006, CLS550 07-11, CLS63 AMG 07-11, E280 2007, E320 03-09, E350 06-11, E500 03-06, E55 AMG 03-06, E550 07-09, E63 AMG 07-11) (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): CARQUEST 90140C,CHAMP CAF1843C, INTERCONTINENTAL AUTO PARTS ALC-6308, LUBER-FINER CAF1843C, MANN & HUMMEL CUK3172 CUK 3172, MERCEDES-BENZ 21 18 300 018, 211 830 0018, MOBIL CAF1843C, NAPA 4726, PUROLATOR C45772C, WIX 24726, MB02136C, C45772C, 24726, AQ1025, RA-22, 042-2106, C3743, CUK3172, Ecogard XC45772C, ATP RA-95, WIX 24726, TYC 800067C, MANN CUK 3172, FRAM CF9785 *** 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.