Personnel and Material Decontamination Equipment

Self-Contained HEPA Pass Box

A compact plug-in pass box with an integral HEPA fan-filter cassette for locations without available ductwork.

Plug-In Fan-Filter Cassette
No External Ductwork
Front Service Access
Timed Internal Purge

Request a Quote Browse Products

Product Introduction

This compact filtered pass box combines blower, prefilter, final filter and controls in a removable service cassette. With both doors locked, it recirculates the enclosed chamber volume and can automatically start a purge after loading. A wall trim system closes the finish opening on both room faces, supporting cleanroom retrofit work.

Key Features

The removable cassette groups fan, filtration and controls in one service assembly.

The chamber operates from a local electrical connection rather than supply and return ducts.

Front-facing service access suits installations with limited overhead clearance.

A timed clean-air cycle starts after the loading door shuts.

Adjustable trim frames accommodate different wall thicknesses.

Customer Product Concerns

Retrofit transfer points need active air cleaning despite limited services and constrained maintenance access.

The existing wall has no path for new HVAC ductwork.An integral recirculation cassette uses only local electrical power.

Ceiling obstacles prevent top-mounted service.The cassette can be removed from the accessible service face.

Operators open the clean side before an internal purge.The controller times the purge and withholds door release.

Wall cut-outs leave difficult-to-clean perimeter gaps.Adjustable stainless trim clamps and seals the opening on both faces.

Typical Applications

Retrofit cleanroomsHospital compounding supportModular laboratoriesMedical packaging rooms

Technical Parameters

Typical compact ranges for a self-contained HEPA pass box are listed below.

Core Material	SUS 304 transfer chamber with integral EC fan, prefilter, HEPA cassette and recirculation duct
Panel Thickness	70-120 mm double-wall and airflow-plenum construction
Effective Width	400-900 mm clear chamber width
Maximum Length	Up to 1000 mm chamber depth
Steel Facing Thickness	1.0-1.2 mm stainless-steel facing
Core Density	30-35 kg/m³ polyurethane infill around the integral service cassette
Thermal Conductivity	0.023-0.029 W/(m·K) for polyurethane enclosure infill
Surface Finish	Brushed SUS 304 chamber with smooth powder-coated or stainless external panels
Joint Type	Sealed modular cabinet with adjustable trim, gasketed doors and plug-in filter cassette
Customization	Available based on the intended application and operating environment.

Available Options

EC fan speed controlH13 or H14 filter cassetteSingle-phase plug-in supplyAdjustable wall-thickness trim

Planning a Self-Contained HEPA Pass Box specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

Talk to Our Team