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)
Because filters are delicate and subject to damage during handling, all filter sales are final; no failure claims can be accepted
Specifications
• 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
Helena
• 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
Fan Filter Units
Terra Universal WhisperFlow® Filter Fan Units
Ducted HEPA Filter Unit, 2' x 4'
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
Ducted filter unit provides uniform flow of HEPA- or ULPA-filtered air to an enclosure (requires remote air handler) | 6601-24-HD displayedDucted 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.
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
Ionizing Bar; 22"L, with Installation Kit, for 24 x 24 Fan/Filter Unit
Ionizing bar, mounted to Fan/Filter Unit, provides a balanced stream of ions to the work area below to neutralize static charge and prevent electro-static discharge; 22" bar shown installed on 2' x 2' FFU.
Filter Unit Mounting Frame; Stainless Steel, 2' x 2'
Stainless steel Fan Filter Unit (FFU) mounting frame supports FFU on drywall or other rigid ceiling material, viewed from above ceiling panel (FFU not included).
Filter Replacement Alarm
The filter replacement alarm monitors filter backpressure and issues an alarm when filter 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).
Safely Mount FFU’s Above Floor for Horizontal Laminar Airflow
The portable FFU base stand can be easily positioned to supply Class 100 horizontal laminar flow into a room or enclosure. It can also be positioned next to sensitive equipment/materials that are mounted close to the floor.
Terra Universal WhisperFlow® Filter Fan Units
