✅ Filtration - Dual density air filter foam: 30PPI for red foam whose role is to capture the largest impurities, and 60PPI for black foam that catches microscopic dust; ✅ Finish - The filtration offered by this foam is of very high quality and ensures optimal functioning of the device Dimensions – 300 x 210 mm (A4 format allowing you to make several filters), thickness 20 mm (10 mm red + 10 mm black) ✅ Installation – Various applications requiring excellent filtration quality (motorcycles, motorcycles, motorcycles, etc.); professional quality foam