This PRORAM performance filter has been designed to replace your standard OEM air filter inside your vehicles air box. These filters are made using a high quality, high flow, synthetic nanofiber filtration media which is pleated to maximise surface area and in turn increase air flow. Utilising over 35 years of experience in the field of motorsport filtration the PRORAM range by Ramair is the premium choice on the market today for your fast road or track car. Filter Length: 205mm Filter Width: 156mm Filter Type: Cylinder Filter Shape: Circle Filter Material: Pleated Synthetic This Filter Fits Ford Focus (mk3) 2.0 ST 2012 – 2019 Ford Focus (mk3) 2.3 RS 2015 – 2019 Features High flow, synthetic nanofiber filtration media Fits in the OEM Airbox and replaces inefficient paper filter Lifetime washable filter Precision injection molded for a perfect fit Guaranteed surface area using high quality custom blended polymer