• Provides particle free exhaust

• Electrically commutated, high-efficiency DC motor meets low-energy power requirements

• CE approved – order Safety Cover separately (PN 6601-15-S)

• Purchase optional Challenge Port Kit separately

• Internal baffling plates and diffuser panel provide uniform air speed across the filter face, ensuring laminar airflow

• 1/4" ( 6 mm) -20 threaded holes in top corners accommodate eyebolts to facilitate installation using suspended guy wires (order eye bolt package separately)

• Includes FDA-approved silicone sealant (specify acrylic urethane or other required sealant type when FFU is ordered)

• HEPA Filter: 99.99% efficient High-Efficiency Particular Air, rated at particles 0.3µm diameter

• Includes yellow power cord with 4-pin connector for easy installation to Terra cleanrooms and hoods (connector may be removed and replaced with plug for connection to wall outlet)

• Sound level is approximately 49 dBA, at average air flow velocity of 90 FPM ( 0.46 m/s)

• Order Replacement filter separately

• Because filters are delicate and subject to damage during handling, all filter sales are final; no failure claims can be accepted

• All-304 stainless steel BioSafe® housing, baffle plate, filter face grille, filter frame and impeller ensure optimal cleanliness and stand up to alcohol and other cleaning agents

• 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.


Size: 2' x 4'

Marks & Listings: CE, UL, ULC

Material: Stainless Steel

Filter: ULPA

Filter Replacement Access: Top Side

Motor Type: Electronically Commutated (EC)

Electrical Specifications: 120/240 V, 4.2 A, 504 W, 50/60 Hz

Dimensions, Product: 23.63" W x 47.63" D x 13" H

Weight, Product: 71 lb

Dimensions, Shipping: 53" W x 53" D x 20" H

Weight, Shipping: 91 lb

Package Type: Palletized

Unit of Measure: EA

Features and Benefits

Smart WhisperFlow Fan Filter Unit ECM Controls

Smart WhisperFlow® Fan Filter Units are quiet, energy efficient and easily adjustable, either manually or via automatic smart console, for centralized fan speed control and cleanroom pressure balancing.

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.

Smart WhisperFlow Fan Filter Unit with EC Motor

Smart WhisperFlow® Fan Filter Units feature electronically commutated (EC) motors for improved energy efficiency, low noise, remote speed control and pressure balancing.

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

Popular Accessories

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