This is a Blue Print Pollen / Cabin Filter with part number ADN12521. It has a Colour Family of Blue. The filter dimensions are: Length 211 mm, Height 20 mm, and Width 226 mm. The filter type is Pollen Filter and it weighs 0.05 kg. Please observe service information. It replaces part numbers ADN12550. Cross-references include 1A FIRST AUTOMOTIVE C304663, A1704, 4X4 ESTANFIEST-21-NS-NS157, SEVEN PARTS SV05FC341, SV05KC341, A.Z. Meisterteile AZMT-41-010-1169, AZMT-41-010. This product is designed to be used as originally intended and not modified for purpose. Please ensure the products are installed by a competent individual. N.B. products are usually supplied without fitting instructions.