Available ISO Ratings: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
Terminal housing connects to remote air supply to provide HEPA/ULPA filtered airflow
Terminal diffuser with adjustable damper allows for easy access of cleanroom air flow adjustments; can be increased or decreased
Two grille material: standard terminal diffuser with aluminum grille or adjustable damper with white mesh filter grille and room side challenge port
Minimize cleanroom service downtime with room-side-replaceable (RSR) terminal housing
Economical filter unit includes internal baffling and diffuser panel for quiet, uniform air flow
No built-in motor; 12" Diameter x 2"H collar allows for connection to external air supply
Aluminum frame material
White powder-coated steel housing (stainless steel finish optional)
Optional remotely operated damper available
Room-side-replaceable terminal housing features a Gel-sealed filter and easy-open clips to allow fast filter replacement from below without breaching the cleanroom ceiling
HEPA filters are rated 99.99% efficient at removing particles @ 0.3 microns at 100 FPM Average Face Velocity
Resistance of 0.31" W.G. @ 100 FPM Average Face Velocity
Suitable for 24/7 operation (depending on air quality)
Data will vary depending on filter media and configurations with other products/systems, such as ductwork or hoods.
Specifications
• ISO Class: ISO 4
• RoHS: Compliant
• Unit of Measure: of 1
Fan Filter Units
Terra Universal WhisperFlow® Filter Fan Units
Ducted HEPA Filter Unit, 2' x 4'
Overview video of Terra Universal's comprehensive portfolio of filter fan unitsTerra Universal WhisperFlow® Filter Fan UnitsOverview video of Terra Universal's comprehensive portfolio of filter fan units
Ducted filter unit provides uniform flow of HEPA- or ULPA-filtered air to an enclosure (requires remote air handler) | 6601-24-HD displayedDucted HEPA Filter Unit, 2' x 4'Ducted filter unit provides HEPA- or ULPA-filtered air to an enclosure (requires remote air handler). WhisperFlow baffling system ensures uniform face velocity (2 x 4 model shown).
Features & Benefits
Terminal Diffuser with HEPA Filter
Ducted terminal housing with HEPA filter provides clean airflow into cleanroom. When adjustable damper is included operator has the ability to increase/decrease airflow with a screw.
Diffuser Panel Promotes Air Flow Uniformity and Protects Filter Integrity
Unlike other manufacturers, Terra’s FFUs include a unique perforated panel beneath the filter, acting as a shower head, to guarantee filter protection and laminar air flow uniformity, which prevents localized air swirling, particle build-up and turbulence.
Protect Against Contaminants and Pathogens
HEPA and ULPA filters help capture many bacteria, viruses (COVID-19), and mold spores that contribute to a host of infections for both humans and plant/animal tissue cultures
Complete Order Transparency
Using Terra’s OnTrak system, our customers can view real-time production updates, receive shipment notifications and track their orders until they arrive at their facility
Website Metric Conversion Tool
Easily convert any product specification to metric units of measure using Terra's web-based metric conversion tool
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
Energy-Efficient Lighting
Energy-efficient LED lighting panels and strips help to lower electrical costs and minimize heat build-up in temperature-controlled environments.
Ionizing Bar; 22"L, with Installation Kit, for 24 x 24 Fan/Filter Unit
Ionizing bar, mounted to Fan/Filter Unit, provides a balanced stream of ions to the work area below to neutralize static charge and prevent electro-static discharge; 22" bar shown installed on 2' x 2' FFU.
Filter Unit Mounting Frame; Stainless Steel, 2' x 2'
Stainless steel Fan Filter Unit (FFU) mounting frame supports FFU on drywall or other rigid ceiling material, viewed from above ceiling panel (FFU not included).
Filter Replacement Alarm
The filter replacement alarm monitors filter backpressure and issues an alarm when filter needs replaced (requires selection of fan filter unit with challenge port, order separately).
Challenge Port for Fan Filter Unit
Challenge port for Fan/Filter Units simplifies filter leak testing and connection of Filter Backpressure Alarm (shown with optional pressure gauge; must be ordered with FFU).
Safely Mount FFU’s Above Floor for Horizontal Laminar Airflow
The portable FFU base stand can be easily positioned to supply Class 100 horizontal laminar flow into a room or enclosure. It can also be positioned next to sensitive equipment/materials that are mounted close to the floor.
Purchase replacement filters ahead of time to prevent costly operational interruptions and avoid damage to fan blowers caused by excessive backpressure from long overdue filter replacements.
