Filter with double layers; the first layer has medium sized micro-pores to capture coarse dirt particles, while the second layer has very fine sized micro-pores to capture microscopic dust particles, the most damaging. TECHNICAL SPECIFICATIONS Filters made of polyurethane foam, self-extinguishing, two layers coupled by a special hot forming process that does not alter its filtering characteristics. The first layer is made of a red filtering media: open cell polyurethane foam with a porosity of 45 ppi *. The second layer is made of a black filtering media: open cell polyurethane foam with a porosity of 60 ppi *. (*ppi: pores per inch)
PIAGGIO PIAGGIO LIBERTY 50 4T PIAGGIO PIAGGIO LIBERTY - LIBERTY LE 125 4T euro 1-2 (LEADER) PIAGGIO PIAGGIO LIBERTY - LIBERTY LE 150 4T euro 1-2 (LEADER) PIAGGIO PIAGGIO LIBERTY - LIBERTY S 200 4T euro 3 (LEADER) PIAGGIO PIAGGIO LIBERTY 125 4T euro 3 (LEADER M389M) PIAGGIO PIAGGIO LIBERTY 150 4T euro 3 (LEADER M672M)