Due to the construction, 4 layers of chirurgical cotton and oil protection, the dust which is in the air, is retained outside of the filter and serve as supplementary element.
Whatever their form (conical, round tapered..), universal filters have been created to adapt to any engine air intake. Those filters are available in many dimensions and can be used for different air absorbption capacities.
The Airbox range is composed of: Airbox filters for carburators, Carbon JR/AIRFORCE airbox to replace an original airbox on an gas oil, gas engine...