Fan Filter Unit, WhisperFlow, 2'x4', ULPA, 120 V, Powder-Coated Steel, Terra Universal (CAT#: STEM-C-0037-ZJF)

The WhisperFlow® Fan Filter Unit 6601-24-U manufactured by Terra Universal provides a steady laminar flow stream of ULPA filtered air to the area below the mounted unit.
Ultra-Low Particulate Air (ULPA) Filter: 99.999% efficient at 0.12µm particle diameter.
AC 3-speed blower motor makes it easy to realize low, medium and high speed wind speed regulation.
FDA-approved silicone sealant has good sealing, high safety and durability.
Internal baffling plate and diffuser panel make the air flow quiet and even.
Threaded (1/4-20 UNC) inserts on corners make the unit easy to hang and mount.
MERV 7 pre-filter which is 30% ASHRAE rated helps to extend the service life of HEPA filter.
Low-profile design is compact and takes up less space, ideal for cleanrooms with limited ceiling space.
Removable yellow power cord with 4-pin connector guarantee the convenience and soundness of the unit's installation to cleanrooms.
Filters are leak tested in accordance with IEST standards and meet UL 900.

Type: WhisperFlow
Material: Powder-Coated Steel
Filter Replacement Access: Top Side
Size: 2'x4'
Filter Frame Material: Aluminum
Filter: ULPA
Motor Type: Permanent Split capacitor (PSC)
Motor HP: 1/4 hp
Airflow: Positive Pressure
Speed Control: 3-Speed Switch
Blower Type: Forward Curved
Active Filter Face Area: 7.1 ft²
Pre-Filter: MERV 7
Unit of Measure: EA
Marks & Listings: UL, ULC
Electrical Specifications: 120 V, 3.8 A, 1 Ph, 60 Hz
Weight, Product: 71 lb
Dimensions, Product: 23.63"W x 47.63"D x 13"H
Weight, Shipping: 103 lb
Dimensions, Shipping: 50" W x 24" D x 19" H
Package Type: Palletized
Warranty: 1 year parts, 90 days labor
Optional Accessories:
Challenge port kit
Power plug adapter
Stainless surface mount frame for installing FFU in ceiling without T-grid
12" ducted inlet connection adapter
Replacement filter
Filter replacement alarm
Eye bolt package
Ionizing bar
Pre-filter safety cover, for CE conformance
Control panel with night mode switch and power distribution modules

Diffuser Panel Promotes Air Flow Uniformity and Protects Filter Integrity: Unlike other manufacturers, Terra's FFUs use a unique perforated panel like a shower head beneath the filter, to protect the filter and make laminar air flow more uniform by preventing localized air swirling, particle build-up and turbulence.
Gel-Filled Channel on Room-Side Replaceable Filter: Gel-filled channel on room-side replaceable filter creates a closed passageway, so it allows the filter to be changed easily, safely and quickly during the operation of the fan filter unit.
Protect Against Contaminants and Pathogens: HEPA and ULPA filters help capture many bacteria, viruses (COVID-19), and mold spores.
Airflow Uniformity Improves Laminar Flow: Unique WhisperFlow® FFU baffling system and anodized diffuser plate minimize turbulence and effectively carry away contaminating particles by making laminar airflow more uniform.
Full Range of Designs, Configurations: WhisperFlow FFUs have various styles: room-side replaceable, all-stainless steel, HEPA or ULPA filtration, EC energy-saving fans, reverse flow and more.
WhisperFlow Quiet Operation Reduces Distracting Background Noise: Noise can reduce concentration at work and even lead to safety accidents. Unlike other AC units with 70 dB of noise, Terra's WhisperFlow design has library-level noise levels. At 90 ft/min output, units measure under 50 dB from only 1 ft away (roughly 75% quieter than 70dB).
Wide Selection of Global Shipping Options: Terra offers a broad range of global shipping services including door-to-door and white glove delivery.
Catalog of CE-Marked Products: Terra offers over 1,700 CE-marked products configured for international voltage requirements.

Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 120 V, Powder-Coated Steel, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 240 V, Powder-Coated Steel, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 120 V, Powder-Coated Steel, w/ Cord Adapter, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 120 V, Powder-Coated Steel, w/o Power Cord, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 120 V, Powder-Coated Steel, Acrylic Urethane Sealant, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', HEPA, 120 V, Stainless Steel, BioSafe®, Terra Universal
Fan Filter Unit, WhisperFlow, 2'x4', ULPA, 240 V, Powder-Coated Steel, Terra Universal