EXAIR's Super Air Knife™ is a quiet, hard-hitting curtain of air for blowoff, cleaning and cooling; dramatically reducing compressed air usage and noise when compared to other blowoffs - a more efficient way to clean, dry or cool parts, webs or conveyors. It delivers a uniform sheet of laminar airflow across the entire length. Even at high pressures of 80 PSIG (5.5 BAR), the sound level is surprisingly quiet at 69 dBA for most applications!