The 8.6-inch diameter spun-bonded polyester filter cartridges are washable and easy to replace. To meet differing needs, the filters can be ordered in many sizes, with from 2 to 200 cartridges. Cleaning is by the company’s Pulse Jet System augmented by proprietary venturi intake ports that draw in surrounding air to increase the effectiveness of the programmable reverse air pulses. A slope-sided collection hopper mounted below the cartridge housing receives the dust and debris dislodged from the cartridge filter elements by the pulsed air. The automatic cleaning mechanism uses 60 psig clean, dry air and a standard 110/1/60 power supply. The solenoid valves and solid-state timer are protected by NEMA 4 enclosures. Options include stainless steel construction, robust support structure, and a full-length access platform with ladder.