The A-404 Pulse Vac has been designed for the contractor who requires large amounts of dust containment. The A-404 has four primary filters that are pulsed clean every 6 seconds with a reversed charge of compressed air, ensuring a continuous vacuum.  With your reduction in filter cleaning labor combined with it’s adaptability to all shrouded equipment, the A-404 Pulse Vac is the most essential and recommended dust collector system for today’s contractor.