This pre-filter is designed to fit snugly around the outside of the Can-Filter. It helps to prevent dust and other airborne particles from clogging the pores of the carbon in the carbon filter. Using a pre-filter helps to improve the lifespan of a carbon filter and ensure that a filter provides the cleanest air possible for as long as possible.
The pre-filter should be changed when it becomes dirty or discolored. A pre-filter is especially useful in areas where large quantities of dust, debris or pollen may be present such as workshops, sheds, barns, greenhouses and growing areas.
Unit Ship Weight: 1 lb