Bauer Breathing Air Cartridge 058821A Class1 Square 760 CF of air between 760 CF of air between changes FJ DQThis air aspirating foam making attachment is designed for all 1" (25mm) QuadraFog™ Series nozzles (sold here) and is able to produce a quality foam blanket using the most commonly used concentrates and be able to be quickly removed to restore the nozzle to its original configuration The Bauer Breathing Air Cartridge 058821A (MS AC MS HP 10") fits compressors with purification systems Make sure you replace your existing cartridge with Bauer OEM Parts to assure you that you are restoring the unit to its original specifications and performance