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4' x 4' stainless steel fan filter unit with HEPA filter and energy-efficient EC motor for cleanroom applications | 6601-44A-H displayed
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

Fan Filter Unit; Stainless Steel, 4'x4', EC Motor, Top Side Replaceable, 277 V

  • Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
  • Backward inclined blower wheel for efficiency in airflow performance
  • 90 fpm airflow up to 1.0" wg static pressure levels
  • Topper design rests on top of filter for easy installation and maintenance

• Type: Topper

• Material: Stainless Steel

• Filter Replacement Access: Top Side

• Size: 4'x4'

• Voltage: 277 V

• Filter: HEPA

• Motor Type: Electronically Commutated (EC)

• Speed Control: Variable Speed Control

• Active Filter Face Area: 14.4 ft²

• Full Seam Welded: No

• UL-Listed: Yes

• Airflow Volume: 740 - 1950 CFM

• Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8

• Certified ISO Grade Design: ISO 5

• UL File Number: E152685

• UL Standard: UL 507

• Unit of Measure: EA

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6601-44A-H-DC
Terra Part # 6601-44A-H-DC
$4,100
Accessories related to Terra Part # 6601-44A-H-DC
84616
Fan Filter Unit; Stainless Steel, 4'x4', EC Motor, Top Side Replaceable, 277 V
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Product Details
  • Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8
  • Backward inclined blower wheel for efficiency in airflow performance
  • 90 fpm airflow up to 1.0" wg static pressure levels
  • Topper design rests on top of filter for easy installation and maintenance
  • Finger guard protected inlet to protect users and the equipment
  • Energy efficient EC motor provides quiet operation
  • Walkable lid up to 250 lbs (excludes inlet and  electrical box)
  • 304 Stainless Steel construction
  • WOF - No filter included, ordered and shipped separately
  • CON4 – Universal Control card, 3 modes available:
  •           Network mode – Modbus RTU
  •           Analog model – 0 -10 VDC input
  •           Onboard Trim pot adjustment

• Type: Topper

• Material: Stainless Steel

• Filter Replacement Access: Top Side

• Size: 4'x4'

• Voltage: 277 V

• Filter: HEPA

• Motor Type: Electronically Commutated (EC)

• Speed Control: Variable Speed Control

• Active Filter Face Area: 14.4 ft²

• Full Seam Welded: No

• UL-Listed: Yes

• Airflow Volume: 740 - 1950 CFM

• Available Certified ISO Grade Designs: ISO 5, ISO 6, ISO 7, ISO 8

• Certified ISO Grade Design: ISO 5

• UL File Number: E152685

• UL Standard: UL 507

• Unit of Measure: EA

• Marks & Listings: UL

• Electrical Specifications: 277 V, 3.2 A, 1 Ph, 50/60 Hz

• Dimensions, Product: 47.63" W x 47.63" D x 16.67" H

• Dimensions, Shipping: 53.63" W x 53.63" D x 22.67" H

Show more
Manuals & Resources
Blog Post
Air Shower Protection for Cannabis Grow Rooms
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Fan Filter Units

  • HEPA filters prevent infections HEPA Filters Prevent Infections
  • Watch Terra's Video on a HEPA Filtered Laminar Flow Cabinet Smoke Test
  • COVID-19 Contamination Control Products by Terra Universal
  • Ducted Reverse-Flow Fan Filter Unit COVID-19 Infection Control
HEPA filters prevent infections
HEPA filters capture and mitigate airborne particles that can cause infections. HEPA Filters Prevent Infections HEPA and ULPA filters capture and mitigate airborne particles, as well as pathogens including Rhinoviruses, Influenza, SARS-CoV-2, and RSV. Filters also combat aerosolized bacteria like C. Difficile, a prevalent cause of hospital-acquired infections.
This smoke test demonstrates the airflow properties of Terra Universal's HEPA Filtered Laminar Flow Cabinet Watch Terra's Video on a HEPA Filtered Laminar Flow Cabinet Smoke Test This smoke test demonstrates the airflow properties of Terra Universal's HEPA Filtered Laminar Flow Cabinet
Terra Universal offers an extensive portfolio of COVID-19 contamination control products for employee protection, surface disinfection and product sterilization COVID-19 Contamination Control Products by Terra Universal As personal and professional lives shift dramatically in response to the COVID-19 pandemic, businesses are searching for methods to reduce the transmission risk of COVID-19 in the workplace. Terra Universal offers an extensive product portfolio to support employee protection, surface disinfection and product sterilization. Let’s take a closer look at two products designed to control the spread of COVID-19.
Ducted Reverse-Flow Fan Filter Unit
6601-PP-09

COVID-19 Infection Control

Terra’s in-stock ceiling-mounted reverse-flow ducted filter fan units convert any space into a negative pressure isolation room

Terra’s reverse flow ducted fan filter units create negative pressure for airborne infection isolation spaces | 6601-24A-HVR displayed COVID-19 Infection Control Terra’s in-stock ceiling-mounted reverse-flow ducted filter fan units convert any space into a negative pressure isolation room

Features & Benefits

Learn More: Filter Fan Units Prevent Infection
Print Copy Copied

Did You Know?
HEPA/ULPA Filters Do More Than Meet ISO Requirements - they also prevent infection.

Most cleanroom professionals understand that HEPA and ULPA filters capture contaminants that degrade particle-sensitive samples. But they also help remove bacteria, mold spores, and many viruses that contribute to a host of infections.

Most common bacteria are contained by the 0.3-micron pore size of high-efficiency particular air (HEPA) filters. Ultra-Low Penetration Air (ULPA) filters, which are rated 99.999% efficient at retaining particles of 0.12 microns and larger in diameter, capture ultra-fine contaminants, including many large viruses and mold spores.

These filters also remove aerosol-born pathogens - germs that hitch a ride on larger particles and liquid droplets that are captured in a HEPA or ULPA filter. HEPA- or ULPA-based Fan/Filter Units (FFUs) thus can play an important role in infection prevention in surgical theaters, ICUs and other medical settings.

Additionally, HEPA filters can help filter pollen, tiny insects, bacteria, mold, and other fungal spores that might be present during plant tissue culture or cannabis production. Contaminants such as these can find a way in via personnel or normal HVAC units and can blight crops and reduce yields. HEPA Filters help increase crop yields, pass inspection/meet regulations, and reduce contamination.

Here is a list of common human pathogens that HEPA/ULPA filters capture and remove from circulation:

Pathogens: Bacteria and Diseases
  • SARS-CoV-2: Coronavirus (COVID-19)
  • Escherichia coli: Gastrointestinal infection
  • Bacillus anthracis : Anthrax
  • Aspergillus brasiliensis: Sinus infections
  • Francisella tularensis: Tularemia
  • Bordetella pertussis : Whooping cough
  • Mycoplasma pneumoniae: Pneumonia
  • Chlamydia pneumoniae: Bronchitis
  • Chlamydia psittaci : Psittacosis
  • Klebsiella pneumoniae: Opportunistic infections
  • Haemophilus influenzae : Meningitis
  • Coxiella burnetii: Q fever
  • Pseudomonas aeruginosa: Opportunistic infections
  • Actinomyces israelii: Actinomycosis
  • Legionella pneumophila: Legionaire's disease
  • Thermoactinomyces sacchari: Farmer's lung
  • Alcaligenes: Opportunistic infections
  • Streptococcus pyogenes: Scarlet fever
  • Mycobacterium Tuberculosis: Tuberculosis
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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.