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Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan Filter Units,Fan/Filter Units
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WhisperFlow® Reverse-Flow Fan Filter Units

Stocked CE Mark Logo ULus Logo WhisperFlow
Manufactured By: Terra Universal
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 Terra Part #PriceShips in
Powder-Coated Steel 2' x 3' ULPA 120 V Aluminum 6601-23-UV$1,2631-3 Days
Powder-Coated Steel 2' x 3' ULPA 240 V Aluminum 6601-23-UV-220-CE$1,5051-3 Days
Powder-Coated Steel 2' x 3' HEPA 120 V Aluminum 6601-23-HV$1,1371-3 Days
Powder-Coated Steel 2' x 3' HEPA 240 V Aluminum 6601-23-HV-220$1,2511-3 Days
Powder-Coated Steel 2' x 4' ULPA 120 V Aluminum 6601-24-UV$1,2631-3 Days
Powder-Coated Steel 2' x 4' ULPA 240 V Aluminum 6601-24-UV-220$1,2631-3 Days
Powder-Coated Steel 2' x 4' HEPA 120 V Aluminum 6601-24-HV$1,1371-3 Days
Powder-Coated Steel 2' x 4' HEPA 240 V Aluminum 6601-24-HV-220$1,2511-3 Days
Powder-Coated Steel 2' x 2' ULPA 120 V Aluminum 6601-22-UV$1,2631-3 Days
Powder-Coated Steel 2' x 2' ULPA 240 V Aluminum 6601-22-UV-220$1,2631-3 Days
Powder-Coated Steel 2' x 2' HEPA 120 V Aluminum 6601-22-HV$1,1371-3 Days
Powder-Coated Steel 2' x 2' HEPA 240 V Aluminum 6601-22-HV-220$1,2511-3 Days
Stainless Steel 2' x 3' ULPA 120 V 304 Stainless Steel 6601-23-UVSS$1,6995-9 Days
Stainless Steel 2' x 4' ULPA 120 V 304 Stainless Steel 6601-24-UVSS$1,6995-9 Days
Stainless Steel 2' x 4' HEPA 120 V 304 Stainless Steel 6601-24-HVSS$1,5951-3 Days
Stainless Steel 2' x 2' ULPA 120 V 304 Stainless Steel 6601-22-UVSS$1,6995-9 Days
Powder-Coated Steel 2' x 2' HEPA 240 V Aluminum 6601-22-HV-220-CE$1,3781-3 Days
Powder-Coated Steel 2' x 2' ULPA 240 V Aluminum 6601-22-UV-220-CE$1,5631-3 Days
Powder-Coated Steel 2' x 3' HEPA 240 V Aluminum 6601-23-HV-220-CE$1,3781-3 Days
Powder-Coated Steel 2' x 4' HEPA 240 V Aluminum 6601-24-HV-220-CE$1,3781-3 Days
Powder-Coated Steel 2' x 4' ULPA 240 V Aluminum 6601-24-UV-220-CE$1,5051-3 Days
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Product Details

Designed in the USA

• Removes submicron particles for safe air release into cleanroom or laboratory

• Ideal for containing dust generated during maintenance or construction

• Applications: enclosures for cleanroom renovations, equipment repair

• Select HEPA filter (99.99% efficient @ 0.3 µm particles) or ULPA filter (99.999% efficient @ 0.12 µm particles)

• Quiet, low-vibration WhisperFlow design: only 50 dBA, measured 30" from filter face @ 90 FPM

• Provides airflow of 640+ CFM under filter load at Medium speed

• Three-speed switch simplifies air balancing

• Provides years of no-maintenance, 24/7 operation depending on your air quality

• Ducted version includes a 12"-diameter flange for connection to exhaust systems

• All FFU data is based on a standalone unit using 1” prefilter and clean filters

• Data will vary depending on filter media and configurations with other products/systems, such as ductwork or hoods.

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Features & Benefits

Features & Benefits

Filter Fan Units Prevent Infection
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Did You Know?
Fan/Filter Units Do More Than Meet ISO Requirements—they also prevent infection.

Most cleanroom professionals understand that FFUs capture contaminants that degrade particle-sensitive samples. But they also remove bacteria and many viruses and mold spores that contribute to a host of infections.

Most common bacteria are contained by the 0.3-micron pore size of high-efficiency particular air (HEPA) filters. Ultra-Low Penetration Air (ULPA) filters, which are rated 99.999% efficient at retaining particles of 0.12 microns and larger in diameter, capture ultra-fine contaminants, including many large viruses and mold spores.

These filters also remove aerosol-born pathogens—germs that hitch a ride on larger particles and liquid droplets that are captured in a HEPA or ULPA filter. HEPA- or ULPA-based Fan/Filter Units (FFUs) thus can play an important role in infection prevention in surgical theaters, ICUs and other medical settings.

Additionally, HEPA filters can help filter pollen, tiny insects, bacteria, mold, and other fungal spores that might be present during plant tissue culture or cannabis production. Contaminants such as these can find a way in via personnel or normal HVAC units and can blight crops and reduce yields. HEPA Filters help increase crop yields, pass inspection/meet regulations, and reduce contamination.

Here is a list of common human pathogens that HEPA/ULPA filters capture and remove from circulation:

Pathogens: Bacteria and Diseases
  • Escherichia coli: Gastrointestinal infection
  • Bacillus anthracis : Anthrax
  • Aspergillus brasiliensis: Sinus infections
  • Francisella tularensis: Tularemia
  • Bordetella pertusis : Whooping cough
  • Mycoplasma pneumaoniae: Pneumonia
  • Chlamydia pneumoniae: Bronchitis
  • Clamydia psittaci : Psittacosis
  • Klebsiella pneumoniae: Opportunistic infections
  • Haemophilus influenzae : Meningitis
  • Coxiella burnetii : Q fever
  • Pseudomonas aeruginosa: Opportunistic infections
  • Actinomyces israelii: Actinomycosis
  • Legionella pneumophila: Legionaire's disease
  • Thermoactinomyces sacchari: Farmer's lung
  • Alkaligenes: Opportunistic infections
  • Streptococcus pyogenes : Scarlet fever
  • Mycobacterium Tuberculosis : Tuberculosis

Eliminate Contaminants and Pathogens

HEPA and ULPA filters capture many bacteria, viruses, and mold spores that contribute to a host of infections for both humans and plant/animal tissue cultures

Available Accessories

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Fan Filter Unit Power Cord Adapter
    Cord Adapter, MIN4 PL to 16AWG Power Cord for Terra Fan/Filter Unit
    Four-pin power cord adapter for fan/filter unit allows connection to standard 120VAC/60Hz power receptacle.
  • Fan Filter Unit Stand
    Stand for Cleanroom Fan/Filter Unit
    Powder coated steel Fan Filter Unit stand supports up to two Fan/Filter Units for horizontal-flow applications (order FFU separately)
  • Filter Replacement Alarm for Fan Filter Unit
    Filter Replacement Alarm
    The Filter Replacement Alarm monitors filter backpressure and issues an alarm when fitler 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).

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Manuals & Resources

Manuals & Resources

On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*

  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
  • FasTrak 24/7 assigns a dedicated production team plus a dedicated senior expeditor working three shifts to meet your delivery specification.
  • FasTrak 24/7 guarantees* to meet the agreed-to specified ship date.

Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.

 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.

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