Air Shower Cabinet

An Air Shower Cabinet is a cleanroom entry/transfer unit that blows high-velocity, HEPA-filtered air over a person or material to remove loose surface particles before they enter a controlled area. It is commonly installed between a gowning area and a cleanroom in pharma, biotech, electronics, medical-device, and laboratory facilities.

How it works

1. The operator or material enters through one door.

2. Both doors are electrically interlocked, so only one door can open at a time—preventing unfiltered air exchange.

3. Photoelectric or manual controls start a timed air cycle, typically adjustable from 0–99 seconds.

4. Nozzles direct filtered air at roughly 22–30 m/s, dislodging particles from garments, packaging, or equipment.

5. Air passes through HEPA filtration and recirculates; HEPA filters typically remove 99.99–99.995% of particles at 0.3 µm, while optional ULPA filters can remove 99.9999% at 0.12 µm.

6. Typical specifications

   Feature	Common range
   External size	About 1300 × 1000 × 2050 mm for single-person units; larger for multi-person models.
   Nozzle count	6 for single-person, 12 for double, 24 for larger cabinets.
   Air velocity	About 22–30 m/s at the nozzles.
   Shower time	0–99 seconds, adjustable.
   Filtration	HEPA, Class 100 cleanliness; ULPA optional.
   Construction	Powder-coated steel, stainless-steel-lined, or full stainless steel.
   Power	Commonly AC 220 V ±10%, 50/60 Hz.

   Types

   • Personnel Air Shower: For operators entering a cleanroom; usually a walk-in chamber with dual interlocked doors.

   • Material Air Shower / Air Shower Pass Box: For tools, components, samples, and packaged materials transferred into a clean area.

   • Cargo Air Shower: Larger tunnel or room-type version for trolleys, pallets, and bulk equipment.

   • Single-, double-, or multi-person units: Sized according to cleanroom traffic and gowning workflow.