MULTIPLE LAYERS OF DEFENSE AGAINST DIRT Every Green Filter is hand-built using the finest materials available today. We start witha multiple layer breathable mediacombined with our unique filtration technology resulting in a superior filtration system. 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.