DXVC3902 Medium Efficiency Air Replacement Filter for DWXAF101The DXVC3902 Medium Efficiency Replacement Filter exclusively for the DeWALT DWXAF101 air filtration system. This meticulously designed filter guarantees efficiency, delivering robust power to uphold pristine air quality. Optimize your savings with our replaceable filters, offering year round air purification while safeguarding your hard earned money. For sustained peak performance, we recommend a straightforward replacement every six months. As the