Fan Filter Units
Cleanroom Fan Filter Units (FFU) incorporate a motor, fan blower, pre-filter, and HEPA or ULPA filter media. HEPA fan filter units are common for contamination control when processing pharmaceuticals, medical devices, OEM assemblies, healthcare facilities, and laboratory or testing environments. ULPA fan filter units offer increased particulate control for ultra-sensitive hardware including display panels, wafer chips, microoptics, satellite imaging, and nanotechnology applications.
Terra offers FFU designs for every application and configuration including cleanrooms, laminar flow hoods, containment enclosures, and gloveboxes. Room-side replaceable housings allow servicing and replacement of the filters or motors from within the cleanroom; topside access or ceiling panel removal is not required.
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WhisperFlow® Fan Filter Units
Cleanroom FFU provides avg velocity of 90+ FPM, airflow of 640+ CFM at Medium speed
Three speed settings (Low/Medium/High) simplify air balancing
Internal baffling plate and diffuser panel provide quiet and uniform air flow across the filter face
Quiet, low-vibration FFU design: only 49 dBA, measured 30" from filter face @ 90 FPM
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Voltage: 120 V, 240 V
Material: Powder-Coated Steel, Stainless Steel
ISO Rated Air Cleanliness: ISO 5, ISO 4
Size: 2'x4', 2'x3', 2'x2', 16" x 48", 16" x 24", 16" x 36", 1'x1'
Filter: HEPA, ULPA
Smart® WhisperFlow® Fan Filter Units (EC Motor)
Available Certified ISO Grade Designs: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
EC brushless motors for quiet, energy-efficient operation and infinitely variable speed control
Provides much wider flow range, 110 to 900 CFM, ideal for applications with high static pressure
Connect to automatic smart console for centralized fan control and cleanroom pressure balancing
Low-heat and low-noise production only 40 dBA, measured 12" from filter face @ 90 FPM
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Voltage: 120/240 V
Material: Powder-Coated Steel, Stainless Steel
ISO Rated Air Cleanliness: ISO 5, ISO 4
Size: 2'x2', 2'x3', 2'x4'
Filter: HEPA, ULPA
Filter Replacement Access: Room-Side, Top Side
Full Seam Welded: No, Yes
Fan Filter Units with Integrated LED Light and Ionizers
Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
Turnkey system combines HEPA-filtered fan unit, LED light and ion bar
Easily installs into cleanroom, laminar flow hood or HEPA-filtered storage cabinet
Voltage: 120 V, 240 V
Material: Powder-Coated Steel
Configuration: Integrated LED Light, Integrated LED and Ionizer
ISO Rated Air Cleanliness: ISO 5
Size: 2'x2', 2'x3', 2'x4'
Filter: HEPA
Filter Replacement Access: Room-Side
Special Application: Built-In LED + Ionizers
Air Conditioned Smart® WhisperFlow® Fan Filter Units
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
EC brushless motors for quiet, energy-efficient operation and infinitely variable speed control
Provides expanded flow range, 110 to 900 CFM, ideal for applications with high static pressure
Connect to automatic smart console for centralized fan control and cleanroom pressure balancing
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Note: Requires dedicated 20A circuit
Voltage: 120 V
Material: Powder-Coated Steel
ISO Rated Air Cleanliness: ISO 5
Size: 2'x4'
Filter: HEPA
Filter Replacement Access: Room-Side
Full Seam Welded: No
BTU: 8,000
Mini Fan Filter Unit; Reverse-Flow, Low Profile, 12" W x 12" D x 8" H, ULPA, 120 V, Stainless Steel
Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
Provides particle free exhaust
Low profile fan filter units are ideal for cleanrooms with restricted height areas
Ultra-Low Particulate Air (ULPA) Filter: 99.999% efficient at 0.12µm particle diameter
FDA-approved silicone sealant prevents air leakage without harmful outgassing chemicals
All-304 stainless steel construction ensure optimal cleanliness and resistance to cleaning agents
Reverse-Flow Fan Filter Units
Available Certified ISO Grade Designs: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
Exhaust flow fan filter units convert any room into a negative pressure isolation/containment room
Filtered exhaust system also ideal for containing dust generated during maintenance or construction
Mounts into ceiling bay to remove sub-micron particles and provide safe exhaust
Medical grade filters are leak tested in accordance with IEST standards and meet UL 900
PSC variable speed motor provides precise, fully adjustable airflow control
Voltage: 120 V, 240 V, 230 V
Material: Powder-Coated Steel, Stainless Steel
ISO Rated Air Cleanliness: ISO 4, ISO 5
Size: 2'x3', 2'x2', 2'x4', 1'x1', 16" x 48", 16" x 36", 16" x 24"
Filter: ULPA, HEPA
Filter Replacement Access: Top Side, Room-Side w/ Dust Collector Pan
FFU Type: Ductless
4' x 4' Fan Filter Units
Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
Available in top-side replaceable and room-side replaceable configurations
90 fpm airflow up to 1.0" wg static pressure levels
Electronically commutated (EC) brushless motor provides a quieter sound level than most 2' x 4' fan filter units at 52.3 dBA
Backward inclined blower wheel for efficiency in airflow performance
Finger guard protected inlet to protect users and the equipment
Voltage: 277 V, 120 V, 208-240V
Material: Stainless Steel, Aluminum
ISO Rated Air Cleanliness: ISO 5
Size: 4'x4'
Filter Replacement Access: Top Side, Room-Side
Full Seam Welded: No
UL-Listed: Yes
Airflow Volume: 740 - 1950 CFM, 665-1900 CFM, 665 to 1900 CFM, 740 to 1950 CFM, 665 - 1900 CFM
Smart® Walkable Fan Filter Units
Available Certified ISO Grade Designs: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
Voltage: 120/240 V
Material: Stainless Steel, Powder-Coated Steel
ISO Rated Air Cleanliness: ISO 5
Size: 2'x2', 2'x3', 2'x4'
Filter: HEPA
Filter Replacement Access: Room-Side, Top Side
Explosion-Proof Fan Filter Units
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
Explosion-proof FFU meets NEC requirements for Class I/Class II, Division 1 Hazardous locations
Non-sparking motor, mounted in a cast-iron, explosion-proof housing
Cleanroom FFU provides avg velocity of 90+ FPM, airflow of 640+ CFM
Internal baffling plate and diffuser panel provide quiet and uniform air flow across the filter face
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Voltage: 120/240 V
Material: Stainless Steel
ISO Rated Air Cleanliness: ISO 4
Size: 2'x2', 2'x3', 2'x4'
Filter: ULPA
Filter Replacement Access: Room-Side, Top Side
Special Application: Explosion-Proof
Explosion-Proof Fan Filter Units, Reverse Flow
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
Exhaust flow fan filter unit convert any room into a negative pressure isolation/containment room
Explosion-proof FFU meets NEC requirements for Class I/Class II, Division 1 Hazardous locations
Non-sparking motor, mounted in a cast-iron, explosion-proof housing
Mounts into ceiling bay to remove sub-micron particles and provide safe exhaust
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter
Heated Fan Filter Units
Available Certified ISO Grade™ Designs
- ISO 5, ISO 6, ISO 7, ISO 8
- Accelerates parts drying after cleaning and sterilization
- Suitable for biocompatibility testing or processes requiring ultra-clean filtered air at elevated temperatures
- ULPA Filter for ISO 4 (Class 10) applications: 99.999% efficient Ultra-Low Penetration Air, rated for particles 0.12µm diameter
- Includes heating element, thermocouple, and insulation for safe, controlled heating up to 100°F
- Note: Requires dedicated 20A circuit
- Voltage: 120 V, 240 V
- Material: Powder-Coated Steel
- ISO Rated Air Cleanliness: ISO 4
- Available Sizes: 2'x2', 2'x3', 2'x4'
- Filter Type: ULPA
- Filter Replacement Access: Top Side, Room-Side
- Special Application: Heated
Narrow WhisperFlow® Fan Filter Units
Available Certified ISO Grade Designs
- ISO 5, ISO 6, ISO 7, ISO 8
- 16" wide narrow fan filter unit fits in space-saving enclosures for a smaller footprint
- Cleanroom FFU provides average velocity of 90+ FPM and airflow of 640+ CFM at Medium speed
- Three speed settings (Low / Medium / High) simplify air balancing
- Internal baffling plate and diffuser panel ensure quiet and uniform airflow across the filter face
- Quiet, low-vibration FFU design: only 49 dBA, measured 30" from filter face @ 90 FPM
- Voltage: 120 V, 240 V
- Material: Powder-Coated Steel, Stainless Steel
- ISO Rated Air Cleanliness: ISO 5
- Available Sizes: 16" x 48", 16" x 24", 16" x 36", 1' x 1'
- Filter Type: HEPA
- Filter Replacement Access: Top Side
High-Capacity WhisperFlow® Portable Filtration System
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
- Terra filters capture bacteria and viruses to reduce risk of infection
- Portable isolation room filtration system suitable for negative pressure or recirculation
- Medical grade air filtration system quickly converts any room to a negative pressure isolation room
- Mobile, self-contained, high capacity air purifier with small footprint easily rolls between rooms
- Clean Air Delivery Rate (CADR) of 800 CFM replaces air 5x per hour in a room 1,000 sqft x 9 ft high
Specifications:
- Voltage: 120 V
- Material: Powder-Coated Steel, 316L SS
- ISO Rated Air Cleanliness: ISO 5, ISO 4
- Filter: HEPA, ULPA
- Pre-Filter: MERV 7, Activated Carbon
- UV Lamp: Included, N/A
- Battery Powered: No, Yes
Portable Horizontal Flow Fan Filter Module
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
- HEPA filters help capture many bacteria and viruses such as COVID-19 to reduce risk of infection
- Portable base stand safely mounts cleanroom FFU’s above floor for horizontal laminar airflow
- Horizontal flow wall module is ideal when ceiling space is unavailable or overhead system unsuitable
- Versatile horizontal FFU system can be customized for compatibility with most Terra FFU’s
- Includes adjustable leveling feet for optimal stability, optional casters for increased mobility
Specifications:
- Voltage: 120 V
- Configuration: 1 FFU, 2 FFU's
- ISO Rated Air Cleanliness: ISO 5
- Filter: HEPA
- Battery Powered: No, Yes
Low Profile Fan Filter Units
Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
- Low profile 8"H fan filter units are ideal for cleanrooms with restricted height areas
- High Efficiency Particulate Air (HEPA) Filter: 99.99% efficient at 0.3µm particle diameter
- Variable speed control dial for precise air flow control
- FDA-approved silicone sealant prevents air leakage without harmful outgassing chemicals
- Backward-curved fan for optimized efficiency
Specifications:
- Voltage: 120 V, 240 V
- Material: Powder-Coated Steel, Stainless Steel
- ISO Rated Air Cleanliness: ISO 5, ISO 4
- Size: 2'x3', 2'x2', 2'x4', 16" x 48", 16" x 24", 1'x1', 16" x 36"
- Filter: HEPA, ULPA
- Filter Replacement Access: Top Side
- UL-Listed: No, Yes
External UPS Battery System for FFU
- Portable battery system mounts on top of 2'x4' FFU or retrofits to existing FFU
- Handy and convenient Uninterruptible Power Supply (UPS) provides power when and where you need it
- Suitable for mobile transport or applications that require protection from unexpected power outages
- Protects against all types of power problems including blackouts, brownouts, surges, and line noise
- Compatible with cleanroom FFU's, laminar flow hoods, mobile cleanroom cabinets, and more
Specifications:
- Voltage: 120 V
- Material: Powder-Coated Steel, Stainless Steel
Laminar Flow Diffusers with HEPA/ULPA Filters
Available Certified ISO Grade™ Designs: 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
Specifications:
- Material: Powder-Coated Steel
- ISO Rated Air Cleanliness: ISO 5
- Size: 2'x3', 2'x4', 2'x2'
- Filter: HEPA
- Filter Replacement Access: Top Side, Room-Side
- Adjustable Damper: No, Yes
Constant Airflow Fan Filter Units
- Constant airflow design dynamically adjusts for changes in static pressure, filter load, and other conditions to maintain set airflow
- Available in top-side replaceable and room-side replaceable configurations
- Electronically commutated (EC) brushless motor provides a quieter sound level than most 2' x 4' fan filter units at 52.3 dBA
- 90 fpm airflow up to 1.0" wg static pressure levels
- Finger guard protected inlet to protect users and the equipment
Specifications:
- Voltage: 115 V
- Material: Aluminum
- Size: 2'x4', 2'x3', 2'x2'
- Filter Type: HEPA, HEPA, RSR
- Filter Replacement Access: Top Side, Room-Side
- FFU Control: Automatic
- UL-Listed: Yes
- Airflow Volume: 250 - 660 CFM, 225 - 650 CFM, 160 - 410 CFM, 240 - 610 CFM, 200 - 500 CFM, 140 - 350 CFM
Filter Replacement Alarm System for Fan Filter Units
Available Certified ISO Grade™ Designs: ISO 6, ISO 7, ISO 8
- Filter replacement alarm keeps your fan filter units working safely and efficiently
- 1 Filter Replacement Alarm unit covers all FFUs in your cleanroom
- Receive automatic replacement alerts to avoid costly and unexpected operational interruptions
- Prevent electrical/fire hazards caused by overworked motors pushing against overloaded HEPA filters
- Control differential pressure set-point to adjust frequency of filter replacement
Specifications:
- Voltage: 120 V, 240 V
- Alert Type: Audible & Visible
Smart® EC Fan Filter Unit With Integrated UPS Battery System
Available Certified ISO Grade™ Designs: ISO 5, ISO 6, ISO 7, ISO 8
- Energy efficient Smart FFU with integrated UPS battery system arrives fully assembled, ready for use
- High-capacity, durable, ISO-compliant system rated for thousands of operating hours
- Handy and convenient Uninterruptible Power Supply (UPS) provides power when and where you need it, battery system provides approximately 1-2 hr runtime depending on FFU speed setting
- EC motor offers high performance, low energy consumption, and low noise levels (40 dB)
- Suitable for mobile transport or applications that require protection from unexpected power outages
Specifications:
- Voltage: 120 V
- Material: Powder-Coated Steel, Stainless Steel
- ISO Rated Air Cleanliness: ISO 5, ISO 4
- Size: 2'x4'
- Filter: HEPA, ULPA
- Filter Replacement Access: Top Side
