The 3" XL filter offers more surface area for increased filtration in intense, dirty conditions. When racing continuously through dust or plowing through massive silt beds, the XL filter will deliver clean, breathable, filtered air. Ideal for drivers and co-drivers competing in long distance races like the Mint 400, Vegas to Reno, and Baja. MULTIPLE LAYERS OF DEFENSE AGAINST DIRT Every Green Filter is hand-built using the finest materials available today. They start witha multiple layer breathable mediacombined with a unique filtration technology resulting in superior filtration. All Premium Green Filters trap the smallest dirt particles that ordinary cotton-gauze “performance” filters can’t capture. FULLY WASHABLE These filters are built durable to last for a long time. Each filter body is 100-percent washable and reusable. Clamp-on design comes with a replacement hose clamp to secure the filter to the 3" MAC1 orMAC3.2 Pumper intake. Fits MAC1 or MAC3.2 Pumper System only.