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Ducted terminal diffuser provides uniform flow of HEPA-filtered air to an enclosure (requires remote air handler) |
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

Laminar Flow Diffuser with HEPA Filter, Ducted, 2'x4', WhisperFlow

  • Available ISO Ratings: ISO 5, ISO 6, ISO 7, ISO 8

• Type: Ducted

• Material: Powder-Coated Steel

• Filter Replacement Access: Top Side

• Size: 2'x4'

• Filter Frame Material: Aluminum

• Filter: HEPA

• Motor Type: None

• Airflow: Positive Pressure

• ISO Class: ISO 5

• RoHS: Compliant

• Unit of Measure: EA

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Stocked ISO 5 Icon
Terra Part #: 6601-24-HD
Manufactured By: Terra Universal
Warranty: 1 year parts, 90 days labor
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6601-24-HD
Terra Part # 6601-24-HD
$605
Usually ships in 1-3 business days

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167 in stock
Accessories related to Terra Part # 6601-24-HD
55504
Laminar Flow Diffuser with HEPA Filter, Ducted, 2'x4', WhisperFlow
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Product Details
  • Available ISO Ratings: ISO 5, ISO 6, ISO 7, ISO 8
  • Includes 12”-diameter x 2”H collar for connection to air supply; Airflow performance depends on flow of supplied air handler
  • 1/4-20 UNC threaded inserts in top corners, accommodate eyebolts to facilitate installation using suspended guy wires (order eyebolt package separately)
  • Includes FDA-approved silicone sealant (specify acrylic urethane or other Required sealant type when FFU is ordered)
  • Purchase optional Challenge Port Kit separately
  • Filter: 99.99% efficient High-Efficiency Particular Air, rated at particles 0.3µm diameter
  • Because filters are delicate and subject to damage during handling, all filter sales are final; no failure claims can be accepted
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• Type: Ducted

• Material: Powder-Coated Steel

• Filter Replacement Access: Top Side

• Size: 2'x4'

• Filter Frame Material: Aluminum

• Filter: HEPA

• Motor Type: None

• Airflow: Positive Pressure

• ISO Class: ISO 5

• RoHS: Compliant

• Unit of Measure: EA

• Weight, Product: 71 Lbs

• Dimensions, Product: 23.63" W x 47.63" D x 11.17" H

• Weight, Shipping: 91 lb

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

• Package Type: Palletized

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Manuals & Resources
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Fan Filter Units

  • Terra Universal WhisperFlow® Filter Fan Units Terra Universal WhisperFlow® Filter Fan Units
  • 2' x 4' Ducted HEPA Filter Unit Ducted HEPA Filter Unit, 2' x 4'
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
2' x 4' Ducted HEPA Filter Unit
Ducted filter unit provides uniform flow of HEPA- or ULPA-filtered air to an enclosure (requires remote air handler) | 6601-24-HD displayed Ducted HEPA Filter Unit, 2' x 4' Ducted filter unit provides HEPA- or ULPA-filtered air to an enclosure (requires remote air handler). WhisperFlow baffling system ensures uniform face velocity (2 x 4 model shown).

Features and Benefits

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

Complete Order Transparency

Using Terra’s OnTrak system, our customers can view real-time production updates, receive shipment notifications and track their orders until they arrive at their facility

Website Metric Conversion Tool

Easily convert any product specification to metric units of measure using Terra's web-based metric conversion tool

Products Compliant With Your ISO Rating

High-capacity, durable, ISO-compliant system rated for thousands of operating hours.
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  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
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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.