Terra Part # 6601-24-HESS
$3,102
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Designed in the USA

• Includes AC 1-speed blower motor

• Purchase optional Challenge Port Kit separately

• Operating Ratings:

• Average CFM (m^3/hr) 717 (1218)

• Air Flow - FPM (m/s) 102 (0.51) (measured 6” (132mm) below filter face)

• 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

• All wiring embedded in filled, rigid conduit in accordance with Class I/II requirements

• Motor: 0.25HP, 1140 RPM, direct-drive, fan-cooled

• Proper installation of explosion proof equipment is critical to maintaining the explosion-proof protection aspects of the system. Therefore all wiring for explosion proof systems should be done in the field per local code by a licensed electrician.

• Explosion-proof motor meets NEC requirement for Class I Group C&D, Class II Group F&G, Division 1 hazardous locations

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

• Replacement filter: 6601-25 (order separately)

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

• 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: UL, ULC

Material: Stainless Steel

Filter: HEPA

Filter Replacement Access: Top Side

Motor Type: Split Capacitor (AC)

Electrical Specifications: 120/240 V, 6.8 A, 816 W, 60 Hz

Dimensions, Product: 23.72"W x 36"D x 19.86"H

Weight, Product: 75 Lbs

Dimensions, Shipping: 29"W x 53"D x 27"H

Weight, Shipping: 95 lb

Package Type: Palletized

Unit of Measure: EA

Features and Benefits

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.

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

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.

Air Flow Uniformity

Unique WhisperFlow® FFU baffling system and anodized diffuser plate promote uniform air speed across the filter face.

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.
  • 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).

On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*

  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
  • FasTrak 24/7 assigns a dedicated production team plus a dedicated senior expeditor working three shifts to meet your delivery specification.
  • FasTrak 24/7 guarantees* to meet the agreed-to specified ship date.

Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.

 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.

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