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Cleanroom Air Distribution Systems
Cleanroom Laminar Flow Ceiling
A modular ceiling plenum and HEPA filter bank that supplies a broad, uniform low-velocity unidirectional airflow over a protected clean process zone.
- Full-Surface HEPA Supply
- Uniform Low-Velocity Airflow
- Modular Filter Bank
- Integrated Service and Lighting Zones
Product Introduction
The cleanroom laminar flow ceiling combines a sealed supply plenum, multiple terminal HEPA filters and a continuous perforated or textile diffuser surface above the protected area. Airflow is balanced across several duct inlets and filter cells so the discharge velocity remains even from edge to center. The broad downward field sweeps airborne particles away from an operating table, filling line or open product zone with minimal lateral induction. Bolted modular sections accommodate lighting, service columns and ceiling equipment while maintaining sealed filter and perimeter interfaces.
Key Features
The continuous diffuser membrane or perforated face straightens local filter jets into a low-turbulence downward field.
Separate inlet plenums and balancing points allow edge and center zones to be equalized independently.
Modular structural frames accept sealed lighting and service openings without breaking the surrounding clean-air surface.
Customer Product Concerns
A laminar ceiling must deliver nearly uniform velocity over a large footprint while fitting lights, equipment rails and service penetrations around the protected zone.
Center filters receive more air than edge filters, creating an uneven downward field.Multiple balanced inlets and zoned plenum sections distribute pressure across the full filter bank.
Gaps around lights interrupt the clean-air curtain over the critical work area.Flush sealed lighting modules occupy planned structural bays within the continuous diffuser layout.
A damaged filter cannot be isolated without opening a large common plenum.Individual room-side filter retainers and test points allow each cell to be inspected and replaced separately.
A rigid diffuser face is difficult to remove around suspended medical equipment.Modular perforated panels or tensioned textile sections provide local access without dismantling the whole ceiling.
Typical Applications
Sterile pharmaceutical filling zonesHospital operating roomsAseptic product assemblyOpen process protection in biotechnologyPrecision microelectronics work areas
Technical Parameters
Representative construction and size ranges for a modular HEPA-filtered laminar flow ceiling are shown below.
| Core Material | Glass-microfiber H14 HEPA filter packs in aluminum frames with polyurethane or gel seals |
|---|---|
| Panel Thickness | 0.8–1.2 mm plenum panels and 1.0–2.0 mm structural frame sections |
| Effective Width | 1800–3500 mm typical protected ceiling width |
| Maximum Length | Up to 3500 mm in standard modular arrays, with larger custom assemblies |
| Steel Facing Thickness | 0.8–1.2 mm powder-coated or stainless plenum facing |
| Core Density | Approximately 8000 kg/m³ for the optional 304 stainless-steel plenum and frame surfaces |
| Thermal Conductivity | Approximately 14–16 W/(m·K) for the optional 304 stainless-steel plenum and frame surfaces |
| Surface Finish | White powder-coated steel or brushed 304 stainless steel with cleanable diffuser membrane |
| Joint Type | Bolted gasketed ceiling modules with individually sealed HEPA cells and sealed service penetrations |
| Customization | Available based on the intended application and operating environment. |
Available Options
Perforated metal or tensioned textile diffuser surfaceIntegrated sealed LED lighting modulesGel-seal or gasket-seal HEPA cellsGlass perimeter skirts and equipment-rail cutouts
Planning a Cleanroom Laminar Flow Ceiling specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
