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Filter Replacement Access

Terra Part #PriceShips in
NonePowder-Coated Steel2'x2'HEPARoom-Side 6601-22-HDR 55973 $9211-3 Days2
Stocked
NonePowder-Coated Steel2'x2'HEPATop Side 6601-22-HD 55502 $5291-3 Days3
Stocked
NonePowder-Coated Steel2'x3'HEPARoom-Side 6601-23-HDR 55975 $9211-3 Days4
Stocked
NonePowder-Coated Steel2'x3'HEPATop Side 6601-23-HD 55503 $5291-3 Days5
Stocked
NonePowder-Coated Steel2'x4'HEPARoom-Side 6601-24-HDR 55711 $9211-3 Days6
Stocked
NonePowder-Coated Steel2'x4'HEPATop Side 6601-24-HD 55504 $5291-3 Days7
Stocked
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Filter
Filter Replacement Access
Item ordered before. Click on bagde to see the order.

Up to 30-day trial periods, free return shipping and on-site training available for qualified equipment.

Request demo from your product specialist or add note to your order or quote request.

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Free shipping in contiguous USA
Custom-configured product: Terra will quote.
Custom-configured product: Terra will quote.
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Product Details

• Laminar Flow Diffuser connects to remote air supply to provide HEPA/ULPA filtered airflow

• No built-in motor; 12" Diameter x 2"H collar allows for connection to external air supply

• Economical filter unit includes internal baffling and diffuser panel for quiet, uniform air flow

• Minimize cleanroom service downtime with room-side-replaceable (RSR) laminar flow diffusers

• Customer must determine if filter system leakage testing is required for their application. If a leak test is required, the unit must be manufactured differently (fully welded rather than riveted). Terra manufactures leak-tested units to meet ISO 14644-3 guidelines.

• Anodized aluminum filter face grill (304 stainless steel filter face optional)

• White powder-coated steel housing (stainless steel finish optional)

• Optional remotely operated damper available

• Room-side-replaceable filter units feature 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.

Unit of Measure: of 1

Fan Filter Units

  • Terra Universal WhisperFlow® Filter Fan Units Terra Universal WhisperFlow® Filter Fan Units
  • 2' x 4' Ducted HEPA Filter Unit Ducted HEPA Filter Unit, 2' x 4'
Terra Universal WhisperFlow® Filter Fan Units

Features & Benefits

Features & Benefits

Filter Fan Units Prevent Infection

Did You Know?
HEPA/ULPA Filters Do More Than Meet ISO Requirements - they also prevent infection.

Most cleanroom professionals understand that HEPA and ULPA filters capture contaminants that degrade particle-sensitive samples. But they also help remove bacteria, mold spores, and many viruses 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
  • SARS-CoV-2: Coronavirus (COVID-19)
  • Escherichia coli: Gastrointestinal infection
  • Bacillus anthracis : Anthrax
  • Aspergillus brasiliensis: Sinus infections
  • Francisella tularensis: Tularemia
  • Bordetella pertusis : Whooping cough
  • Mycoplasma pneumoniae: 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
HEPA/ULPA filtration diagram with examples of filtered contaminants

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 mesure using Terra's web-based metric conversion tool

Available Accessories

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • 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.
  • Replacement Filters
    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.

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Manuals & Resources

Manuals & Resources

Roomside Replacable FFU Optional Tests

Blog Post

Air Shower Protection for Cannabis Grow Rooms

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