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Uninterruptible Power Supply (UPS) mounted on top of FFU allows battery operation during power outage; status indicator lights provide visual alerts | 6601-24A-H-EC-BP displayed
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,Fan/Filter Units,Featured Products
Product Group:
6601-PP-33
6601-PP-33 78308

Smart® EC Fan Filter Unit With Integrated UPS Battery System

  • Available Certified ISO Rated 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

• Certified ISO Rated Design: ISO 5

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Stocked ULus Listed WhisperFlow BioSafe classic logo ISO 5 Icon
Manufactured By: Terra Universal
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 Terra Part # Price Ships in
120/230 V Powder-Coated Steel ISO 5 2'x4' HEPA Top Side 6601-24A-H-EC-BP 78261 $2,541 0-2 Days 2
Quick Ship+ Available Only 7 left in stock
120/230 V Stainless Steel ISO 4 2'x4' ULPA Top Side 6601-24A-USS-EC-BP 80037 $3,953 1-3 Days 3
Quick Ship+ Available Only 3 left in stock
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Up to 30-day trial periods, free return shipping and on-site training available for qualified equipment.

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Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
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Product Details
Product Details
  • Available Certified ISO Rated 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
  • Ships in 120V configuration. Can be easily be reconfigured to 230V
  • Uninterruptible Power Supply (UPS) battery system:
  • UPS systems provide a backup battery-power supply that keeps critical equipment running without interruption when utility power supply is unavailable.
  • UPS System includes main UPS plus an add-on external rechargeable battery pack for longer runtimes.
  • Fully assembled plug-and-play design speeds up installation. No time-consuming connection of internal batteries by user required.
  • Intelligent battery management system extends battery life.
  • Estimated Runtimes:
  • 180W Load: 123 minutes.
  • 350W Load (max speed): 55 minutes.
  • NOTE: All estimates based on new, fully charged batteries under typical office environmental conditions.
  • Front panel LEDs alert you to a variety of performance conditions, including AC line present, automatic voltage regulation, UPS load level and replace battery.
  • External battery can be "hot-swapped" (safely removed or swapped without shutting down the UPS).
  • For Power Outages: UPS Protects against all types of power problems including blackouts, brownouts, surges and line noise. In the event of a power outage, the UPS immediately activates without interruption. The UPS keeps your FFU running long enough to either: (1) safely store away contamination-sensitive materials and works-in-progress before shutting down operations, or (2) switch to a back-up power generator.
  • For Mobile Applications: Use the UPS to create a mobile battery-powered cleanroom on wheels to safely transport sterile materials through a dirty space. The UPS provides adequate time to transfer out of one cleanroom and relocate to another cleanroom in a different part of the facility. With the FFU mounted on top of the cabinet, the battery-powered system supplies uniform HEPA-filtered air flow to prevent airborne contamination while moving the cabinet through a dirty environment. Once the cart arrives at its destination, simply plug the system back into a wall outlet to recharge the batteries.
  • Smart® EC FFU:
  • High Efficiency Particulate Air (HEPA) Filter: 99.99% efficient at 0.3µm particle diameter.
  • Electronically commutated (EC) brushless motor with internal microprocessor. EC motor offers high performance, low energy consumption and low noise levels (40 dB).
  • MODBUS® networking control card with closed-loop control capability supports air pressure, air flow, and particle count sensors.
  • Motor control panel includes diagnostic indicator lights, manual speed adjustment, test probe jacks, CAT5e ports, control mode switch, and MODBUS® address DIP switch bank.
  • FDA-approved silicone sealant minimizes leaks for improved efficiency. It is also food-grade and resistant to a wide variety of chemicals and environments for a long service life.
  • Internal baffling plate and diffuser panel provide quiet uniform air flow across the filter face.
  • Filters are leak tested in accordance with IEST standards and meet UL 900.
  • Includes MERV 7 pre-filter to extend service life of HEPA filter.
  • See performance data and submittal sheets for additional information.
  • Optional Accessories: challenge port kit, power plug adapter, replacement filter, filter replacement alarm, ionizing bar, pre-filter safety cover for CE conformance.
  • All filter sales are final; returns for this item cannot be accepted.
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• Certified ISO Rated Design: ISO 5

• Marks & Listings: CE, UL, ULC

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Fan Filter Units

  • Terra Universal WhisperFlow® Filter Fan Units Terra Universal WhisperFlow® Filter Fan Units
Terra Universal WhisperFlow® Filter Fan Units
Overview video of Terra Universal's comprehensive portfolio of filter fan units Terra Universal WhisperFlow® Filter Fan Units Overview video of Terra Universal's comprehensive portfolio of filter fan units
Features & Benefits

Features and Benefits

Learn More: Filter Fan Units Prevent Infection
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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

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.

Full Range of Designs, Configurations!

WhisperFlow FFUs come in all styles: room-side replaceable, all-stainless steel, HEPA or ULPA filtration, EC energy-saving fans, reverse flow and more (shown: vapor filtration module with UV sanitation lamp).

Products Compliant With Your ISO Rating

High-capacity, durable, ISO-compliant system rated for thousands of operating hours.
Available Accessories
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Energy-Efficient LED Lighting Panels

    Energy-Efficient Lighting

    Energy-efficient LED lighting panels and strips help to lower electrical costs and minimize heat build-up in temperature-controlled environments.
  • Fan Filter Unit Control System

    Fan Filter Unit Control System

    Provides room-by-room monitoring and control of Smart WhisperFlow FFUs to maintain target pressure differentials for ISO classification; temperature, humidity and particle monitoring and data logging, as well as dynamic fan set-point control, also available.
  • Filter Replacement Alarm for Fan Filter Unit

    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).
  • Ionizing Bar Installed on Cleanroom Fan/Filter Unit

    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.
  • Fan Filter Unit Challenge Port

    Challenge Port; for Fan/Filter Unit

    Challenge port for Fan/Filter Units simplifies filter leak testing and connection of Filter Backpressure Alarm (shown mounted on SS FFU, order separately).
  • Power Distribution Modules for Cleanroom FFUs, Lights

    Power Distribution Modules for Cleanroom FFUs and Lights

    UL-listed power distribution modules include all breakers, transformers and other electrical components for FFU/light connections; allows fast addition or relocation of FFUs or lights without the need for rewiring.
  • Horizontal laminar flow wall module with 2 HEPA fan filter units mounted on a base stand

    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.
  • 2’x2’ replacement filter for roomside replaceable (RSR) Fan Filter Unit (FFU), inside view
    Learn More

    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

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