CFM Terminal Diffuser
CFM Terminal Diffusers provide efficient HEPA or ULPA filtration with uniform airflow, low pressure drop, and easy ceiling integration. Built with durable, cleanroom-compatible materials, they ensure consistent performance, simple maintenance, and reliable contamination control for new or retrofit cleanroom and laminar flow installations.
UL Listed
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Overview of CFM Terminal Diffuser
CFM Terminal Diffusers are engineered to deliver dependable HEPA or ULPA filtered air to cleanrooms and laminar flow devices. Designed for simple integration into ceilings, they provide uniform airflow and low resistance, ensuring clean, controlled environments. Their lightweight yet durable construction makes them an efficient and cost-effective choice for contamination-sensitive spaces.
Consistent Laminar Airflow
Each diffuser ensures uniform air velocity at 100 FPM ±20% across the entire face, maintaining ISO-classified conditions with consistent, low-turbulence airflow. This performance is critical to safeguarding sensitive processes, protecting personnel, and supporting regulatory compliance, making the diffuser a reliable choice for laboratories, cleanrooms, and controlled production facilities.
Roomside Damper Access
For streamlined setup and maintenance, the diffuser includes an integrated adjustable damper that can be accessed directly from the cleanroom side. This design allows precise airflow balancing without disturbing ceiling panels or operations, reducing downtime and ensuring long-term efficiency in demanding contamination control environments.
Durable, Cleanroom-Compatible Materials
Constructed from extruded aluminum with a galvanized steel hood, the diffuser is both lightweight and durable. A white epoxy-coated grille provides fire-resistant protection while enhancing longevity in active cleanroom spaces. All materials meet UL 586 and UL 900 standards, ensuring compliance, safety, and performance in sensitive environments.
Specifications
| Efficiency | 99.99% at 0.3 micron (HEPA), 99.9995% at 0.12 micron (ULPA) |
|---|---|
| Type | Ducted HEPA/ULPA terminal diffuser |
| Media Pack Depth | 2.0" (HEPA), 2.5" (ULPA) |
| Frame | Anodized extruded aluminum |
| Hood | Galvanized steel |
| Media Seal | Potting material fully encapsulates pleats on all four sides |
| Collar | 10" or 12" duct collar, 2" high |
| Damper | Adjustable from roomside via centerboard access port |
| Grille | White epoxy powder coated steel |
| Airflow Uniformity | 100 fpm ±20% |
| Initial Resistance | 0.54 in w.g. (HEPA), 0.70 in w.g. (ULPA) at 100 fpm |
| Height | 5.31" (HEPA), 6.21" (ULPA); add 2" for collar |
| Seismic | Seismic holes or tabs for UBC compliance |
| Flammability | Fire retardant and self extinguishing |
| UL Rating | UL 586 and UL 900 |
| Standards | IEST and/or ISO |
| Weight | 25 to 32 lbs |
| Options | 1.5" foil insulation blanket; grille options |
| Applications | Cleanrooms, laminar flow devices, aerospace, automotive, electronics, plastics, pharmaceuticals, semiconductor |
| Available Sizes | 2x2 (23.62x23.62), 2x4 (23.62x47.62 in) |
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