Direct-Fired Industrial Air Handlers – 4000 Series

Direct Fired MUA

RAPID® 4000-Series are extremely durable and long-lasting, creating Rapid’s reputation for industrial-grade quality and long lifespan.  Constructed with an external skin welded to an internal welded structural steel framework, energy efficient airfoil fans and heavy-duty fan bearings with an ABMA L-10 rated life of 100,000 hours, energy efficient & low maintenance direct-fired burner and manifold.


  • Heavy-duty, corrosion-resistant aluminized steel welded housing.
  • Improved indoor air quality – Helps dilute and expel airborne contaminants making exhaust systems operate more efficiently
  • System that puts 100% of the available heat in the airstream, no exhaust flue = energy savings.
  • Large tooled access doors for easy access to blower, motor, drives and burner

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Air Hygiene Specialist

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