Air Filters and Chemical Filtration

Exhaust HEPA Filter Housing

A sealed wall or ceiling housing that captures contaminated room exhaust through a room-side replaceable HEPA filter before it enters the duct system.

Negative-Pressure Service
Room-Side Replacement
Optional Prefilter Door
Integrated Test Connections

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Product Introduction

The exhaust HEPA housing mounts at the room boundary so contaminated air crosses the filter before entering shared ductwork. A welded box, sealed inlet grille and compression clamp keep the dirty side confined to a shallow room-side zone. The front panel can include an integral prefilter and opens for filter replacement without disturbing the downstream duct. Pressure sampling, aerosol injection and scan access can be incorporated around the sealing frame.

Key Features

Boundary placement captures particulate contamination before the exhaust duct.

Room-side filter access supports service where ceiling-void entry is restricted.

A hinged prefilter face intercepts lint and extends the life of the HEPA element.

Integrated test connections allow seal and resistance checks at the terminal.

Customer Product Concerns

An exhaust terminal must prevent contaminated room air from bypassing into the common duct and remain serviceable under negative pressure.

Contaminants enter the duct before reaching a remote central filter.A terminal HEPA element captures particles at the room boundary.

Lint loads the HEPA face and raises room negative pressure.A removable coarse prefilter intercepts larger debris ahead of the absolute filter.

The sealing edge cannot be inspected from the occupied space.Room-side clamps expose the gasket or gel interface after the grille is removed.

Testing disturbs ductwork shared with adjacent rooms.Local pressure and aerosol ports keep verification focused on the individual terminal.

Typical Applications

Hospital isolation roomsMicrobiology laboratory exhaustPharmaceutical weighing boothsAnimal holding suitesControlled decontamination rooms

Technical Parameters

Typical construction ranges for a room-side exhaust HEPA housing are shown below.

Core Material	Fully welded galvanized or 304 stainless-steel box with stainless room-side filter clamp
Panel Thickness	1.0–1.5 mm enclosure panels
Effective Width	305–915 mm nominal filter face width
Maximum Length	Up to 1220 mm nominal terminal length
Steel Facing Thickness	1.0–1.5 mm housing and grille sheet
Core Density	Approximately 7850–8000 kg/m³ for steel housing parts
Thermal Conductivity	Approximately 15–50 W/(m·K) for the selected exhaust-box sheet construction
Surface Finish	White powder coat or brushed stainless finish with smooth cleanable face
Joint Type	Welded terminal box with room-side gasket or gel filter seal and flanged exhaust spigot
Customization	Available based on the intended application and operating environment.

Available Options

Wall or ceiling mountingGasket- or gel-seal HEPAIntegral prefilter grillePressure and aerosol test ports

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