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Cleanroom Air Distribution Systems
Cleanroom HEPA Terminal Housing
A fully welded ceiling housing that secures a terminal HEPA or ULPA filter against a continuous sealed seat and preserves room-side service access.
- Fully Welded Air Path
- Gasket or Gel Filter Seat
- Room-Side Clamping
- Aerosol Test Connections
Product Introduction
The cleanroom HEPA terminal housing is the pressure-containing enclosure behind a final ceiling filter. Its welded stainless-steel or coated-steel shell includes the duct inlet, filter seal surface, clamping mechanism and service test ports but allows the diffuser face and filter type to be selected separately. A smooth interior avoids exposed acoustic material and makes the upstream chamber accessible for cleaning when the filter is removed. The housing can serve supply or extract terminals and can be integrated into modular, walkable or gypsum ceilings with a matching perimeter frame.
Key Features
Adjustable room-side clamps distribute loading around gasket-seal or gel-seal filter frames.
Separate aerosol injection, upstream sampling and pressure ports support repeatable filter checks.
Multiple ceiling frames allow the same housing concept to fit T-grid, panel or hard-ceiling construction.
Customer Product Concerns
The housing must protect the final-filter seal from duct pressure, ceiling movement and repeated filter changes while retaining a clean internal air path.
Folded casing seams leak upstream air around the filter.A continuously welded shell creates one pressure-tight path from the duct inlet to the seal seat.
Uneven clamps distort the filter frame and compress one side of the gasket more than another.Distributed adjustable retainers apply balanced room-side loading around the filter perimeter.
Testing hoses and instruments cannot connect without removing the diffuser.Accessible capped ports separate aerosol, sample and pressure functions at the terminal face.
A housing flange leaves ledges around a hard cleanroom ceiling.Flush perimeter frame variants close neatly to T-grid, sandwich-panel or sealed gypsum ceilings.
Typical Applications
Terminal filtration above sterile manufacturing roomsFinal exhaust filtration in containment support areasHospital clean ventilation ceilingsLaboratory HEPA supply branchesMicroelectronics cleanroom ceiling grids
Technical Parameters
Representative material and size ranges for welded cleanroom terminal filter housings are listed below.
| Core Material | Fully welded 304 stainless steel or epoxy-coated steel with stainless filter clamps and polymer seal channel |
|---|---|
| Panel Thickness | 0.8–1.5 mm welded housing panels |
| Effective Width | 305–610 mm nominal terminal filter width |
| Maximum Length | Up to 1220 mm for rectangular ceiling housings |
| Steel Facing Thickness | 0.8–1.5 mm housing sheet and 1.5–2.0 mm perimeter flange |
| Core Density | Approximately 8000 kg/m³ for 304 stainless-steel housing construction |
| Thermal Conductivity | Approximately 14–16 W/(m·K) for 304 stainless-steel housing construction |
| Surface Finish | Smooth bead-blasted or electropolished stainless steel, or white epoxy powder coating |
| Joint Type | Continuously welded shell with gasket- or gel-seal filter channel and flanged duct inlet |
| Customization | Available based on the intended application and operating environment. |
Available Options
304 or 316L stainless-steel constructionGasket-seal or liquid-gel filter interfaceTop or side duct connectionT-grid, panel-ceiling or hard-ceiling perimeter frame
Planning a Cleanroom HEPA Terminal Housing specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
