Available ISO Ratings: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
Exhaust flow fan filter unit convert any room into a negative pressure isolation/containment room
Explosion-proof FFU meets NEC requirements for Class I/Class II, Division 1 Hazardous locations
Non-sparking motor, mounted in a cast-iron, explosion-proof housing
Mounts into ceiling bay to remove sub-micron particles and provide safe exhaust
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Explosion-Proof Design:
Explosion-proof motor meets NEC requirement for Class I Group C and D, Class II Group F and G, Division 1 hazardous locations.
All wiring embedded in filled, rigid conduit in accordance with Class I/II requirements.
NOTE: Proper installation of explosion proof equipment is critical to maintaining the explosion-proof protection aspects of the system. Customer must hard wire the motor/ffu in correlation to their specified voltage at time of installation. Therefore all wiring for explosion proof systems should be done in the field per local code by a licensed electrician.
FFU Design:
All-304 stainless steel BioSafe® housing, baffle plate, filter face grille, and filter frame ensure optimal cleanliness and stand up to alcohol and other cleaning agents.
Internal baffling plate and diffuser panel provide quiet uniform air flow across the filter face.
FDA-approved silicone sealant without harmful chemicals seals inside housing to prevent air leakage (specify acrylic urethane or other required sealant type when FFU is ordered).
ULPA Filter: 99.999% efficient Ultra-Low Penetration Air, rated at particles 0.12µm diameter, shipped uninstalled to prevent damage during shipping.
Medical grade filters are leak tested in accordance with IEST standards and meet UL 900.
See performance data and submittal sheets for additional information.
NOTE: Because filters are delicate and subject to damage during handling, all filter sales are final; no returns can be accepted.
Optional Accessories:
Stainless steel surface mount frame for installing FFU in ceiling without T-grid.
Replacement filters.
Includes:
(1) MERV 7 filter (30% ASHRAE rated), 19.5" x 19.5" x 7/8" thk.
• Dimensions, Product: 23.72" W x 35.63" D x 19.86" H
• Weight, Shipping: 73 lb
• Dimensions, Shipping: 53"W x 53"D x 20"H
• Package Type: Palletized
Fan Filter Units
Terra Universal WhisperFlow® Filter Fan Units
Overview video of Terra Universal's comprehensive portfolio of filter fan unitsTerra Universal WhisperFlow® Filter Fan UnitsOverview video of Terra Universal's comprehensive portfolio of filter fan units
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.
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
Non-Sparking Direct-Drive Motor
Explosion-proof motors use a non-sparking polypropylene fan and cast-iron brackets attached to the heavy duty rolled steel frame
Gel-Filled Channel on Room-Side Replaceable Filter
Gel-filled channel on room-side replaceable filter forms a tight seal against knife edge on fan housing, allowing fast, simple filter replacement from inside the cleanroom without the need for costly cleanroom shut-down.
Explosion-Proof Junction Box
The reinforced junction box of the explosion-proof fan filter unit is built to withstand and contain an explosive reaction within the conduit system.
Long Running FFU Motors
Terra’s filter fan unit motors are rated for 5 years of continuous, 24/7 operation, if the HEPA filters are consistently replaced. To accurately monitor your HEPA filter’s saturation levels, purchase Terra’s audible and visual filter replacement alarm system.
Easy-Release Filter Clamp on Room-Side Replaceable FFU
Easy-release clamps rotate to release filter on Room-Side Replaceable Fan Filter Units, simplifying filter servicing without the need for a cleanroom shut-down.
Explosion-Proof Power Switches
UL-rated explosion-proof switches are connected to the lights and blowers using specialized conduit with potted fittings. All electrical components are sealed to eliminate potential ignition points.
Explosion-Proof Potted Fittings
Conduit is filled with an expanding cement mixture to isolate explosion-proof components from potential sources of ignition; explosion-proof fittings meet requirements of NEC for Class I, Division 1 hazardous locations.
Pre-Filter Grounding Clip
A grounding wire connects the body of the Explosion-Proof FFU to a metal wireframe embedded in the pre-filter as a safeguard against sparking.
Exposure to loud noises can lower the ability to focus on work and listen selectively, which may also lead to safety issues. Typical AC units can be annoyingly loud, measuring in the range of 70 dB (comparable to a vacuum cleaner). Terra’s WhisperFlow design produces far lower noise levels for a quiet environment comparable to a library. At 90 ft/min output, units measure under 50 dB from only 1 ft away (roughly 75% quieter than 70dB).
Product Prices Honored Worldwide
From Argentina to Zimbabwe, Terra's customers pay a single web-listed price for each product
Multilingual Website Translator
Easily transcribe the verbaige on Terra's website into more than 80 different languages using our website translator tool
Catalog of CE-Marked Products
Terra offers over 1,700 CE-marked products configured for international voltage requirements
Products Compliant With Your ISO Rating
High-capacity, durable, ISO-compliant system rated for thousands of operating hours.
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
Explosion-Proof 40W LED Light
UL-listed for Class I, Division 1 and 2, Groups C and D areas, this low profile LED light produces 3,600 lumens and operates from 120 to 277VAC, 50/60Hz. The heat-dissipating housing increases the efficiency and lifespan of the LEDs.
Explosion-Proof Power Distribution Module
Explosion-Proof Power Distribution Module (PDM) meets NEC code for a Class I/Division 1 hazardous location; includes all relays, breaks and other cleanroom electrical components
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).