Select Product




Terra Part #PriceShips in
NoneStainless Steel2'x2' 6604-00 65095 $2591-3 Days2
NoneStainless Steel2'x3' 6604-01 65096 $2661-3 Days3
NoneStainless Steel2'x4' 6604-02 65097 $2741-3 Days4
Item ordered before. Click on bagde to see the order.
Demo Available
Some ship in:
Usually Ships in:
Item is in stock and ready for immediate shipping
Free shipping in contiguous USA
Custom-configured product: Terra will quote.
Custom-configured product: Terra will quote.
Select a product line for product summary

Product Details

• Stainless steel mounting frames allow fan filter units or light panels to be installed in drywall or other hard ceilings without a ceiling grid.

• The frames are sized to hold 2' x 4' fan/filter units or light panels, or 2' x 3' and 2' x 2' fan/filter

• Frames "cradle" the fan filter unit or light panel, and sit securely in the ceiling cut-out with support from top flange.

• Continuous seams in the 304 stainless steel frames' corners reduce deposit of contaminating particles and simplify cleaning

• Intended for use with supported ceilings that can safely bear the weight of fan filter unit or light panels to be installed

• Mounting frame provides no support beyond the perimeter of the ceiling cut-out

Horizontal Flow Cleanroom

Standard Features

  • A Status Indicator
    Status Indicator Lights: Glow to indicate FFUs are operational; flash when FFUs are off
  • B HEPA filtered
    HEPA or ULPA fan/filter units provide a uniform flow of particle-free air
  • C Range of Wall Choices
    Select acrylic, static-dissipative, glass or polycarbonate wall panels
  • D Door Designs
    Several door designs: aluminum swing or sliding, vinyl strip shields (not shown)
  • E Control Panel
    Control panel includes internal room pressure gauge and other selected instruments (not shown)
  • F All Steel Frame
    Steel frame supports weight: no bracing required

Optional Features

  • 1 Light Modules
    Fluorescent or LED light modules (LED strips available for mounting directly to steel grid)

Not Shown: Night Service settings - Options include Night Service setting, pass-through chambers, A/C, vacuum, DI water and gas utilities

Fan Filter Units

  • EC HEPA Fan Filter Unit Smart WhisperFlow Fan Filter Unit with EC Motor
  • Room Side Replaceable Fan Filter Units (FFUs) Room Side Replaceable WhisperFlow® Fan Filter Units (FFUs)
  • Stainless Steel WhisperFlow Fan and Filter Units Stainless Steel WhisperFlow Fan and Filter Units, 2' x 4'
  • Explosion-Proof Softwall Cleanroom Explosion-Proof Softwall Cleanroom
  • 2' x 4' Ducted HEPA Filter Unit Ducted HEPA Filter Unit, 2' x 4'
  • Cleanroom HEPA or ULPA Fan Filter Unit WhisperFlow Cleanroom HEPA Fan Filter Unit
EC HEPA Fan Filter Unit
Room Side Replaceable Fan Filter Units (FFUs)
Stainless Steel WhisperFlow Fan and Filter Units
Explosion-Proof Softwall Cleanroom
2' x 4' Ducted HEPA Filter Unit
Cleanroom HEPA or ULPA Fan Filter Unit

Features & Benefits

Features and Benefits

Hardwall Cleanroom FAQs

Modular Hardwall Clean Room FAQs

What is a “hardwall” clean room?

Hardwall modular cleanrooms provide a completely enclosed, rigid free-standing structure with vents to exhaust air. Terra Universal fabricates the framing from powder-coated or stainless steel; wall panels are available in clear acrylic, static-dissipative PVC, polycarbonate and tempered glass, as well as opaque white polypropylene.

Because they can be specified, built and installed in a fraction of the time associated with brick-and-mortar clean rooms, modular hardwall rooms are ideal for fast ramp-up projects or short production cycles that may not merit the expense and delay of a conventional room.

Why should I choose a hardwall clean room over a softwall clean room?

Hardwall clean rooms can maintain pressure differentials, which may be required to meet certain standards for cleanliness (ISO 5 or 6, as well as USP compounding regulations). Their wall panels are more durable and easier to clean than softwall panels or curtains.

Hardwall construction also allows temperature and humidity control, which is enhanced in a recirculating clean room design using vertical air returns in conjunction with A/C units. Unlike softwall designs, hardwall cleanrooms can provide negative-pressure containment.

What modifications are required for a containment clean room application?

A negative-pressure containment room must pull more air out than it introduces through ceiling fan/filter units. Air is typically exhausted through ductwork tied to a ventilation fan.

Ductwork most often runs along the bottom perimeter of the clean room and draws air from multiple locations along the room perimeter to minimize disruption to laminar flow. The ventilation fan mounts on the floor outside the cleanroom, or ductwork may pass exhaust upward to a roof-mounted fan. In order to maintain negative pressure, this fan must be capable of pulling about 30% more air than the HEPA filters introduce.

Depending on the application, a containment room may require exit filtration: either HEPA/ULPA filters for particles and aerosols, and/or carbon filters to remove chemical fumes.

Can a hardwall clean room accommodate multiple production suites?

Internal walls and careful positioning of ceiling Fan/Filter Units (FFU) allows you to configure a facility with many rooms, each operating at a different ISO cleanliness level. Some points to keep in mind:

  • Clean room requirements typically specify a pressure differential between 0.025 – 0.05”WC between adjoining rooms of differing ISO classifications. Terra’s Smart Control Systems simplify this task by allowing FFU speed adjustment from a central control panel.
  • Certification of multi-room facilities often requires logging of pressure levels, which correlate to cleanliness and (in a containment application) environmental safety. Smart Controls are available with automated data logging that helps meet this requirement.
  • Smart Controls also provide automated end-of-shift set-back mode, which saves energy without compromising clean room integrity.
What other environment controls or protections can hardwall cleanrooms provide?

Beside controlling particulate contamination and internal positive or negative pressure, hardwall cleanrooms are available to meet these special requirements:

  • Static Control: select static-dissipative PVC panels for optimal protection against electro-static discharge. Ceiling-mount ionizing bars neutralize charges on workstations. Eliminating surface charge build-ups also removes “static cling” that attracts and holds airborne particles.
  • Temperature: in addition to module A/C units, Terra also provides insulated hardwall panels to enhance thermal stability. For improved thermal efficiency, select a double-wall BioSafe Clean Room.
  • Relative Humidity: Terra offer desiccant-based dehumidification modules as well as ultrasonic humidifiers.
  • Fire and Explosion Resistance: Call to discuss requirements for NEMA Class I, Division 1 explosion-proof FFUs, lights and wiring, available on any Terra clean room. Terra also provides fire-safe wall and ceiling panels that meet FM 4910 Clean Room Materials Flammability Test Protocol for flame spread, smoke contamination and resistance to corrosives.
  • Microbial Control: UV germicidal lights with an occupancy-sensor safety cut-off help maintain sterile conditions in bio/pharmaceutical clean rooms.
  • Vapor and Particle Removal: Reverse-flow FFUs capture particles generated in localized cleanroom spaces to minimize contamination. Vapor removal FFUs eliminate trace amounts of VOCs from make-up air to prevent chemical fume contamination.
  • Energy-Efficiency Compliance: Terra helps meet Title 24 and other energy-efficiency requirements through use of EC motors, LED lighting and other low-energy devices.
  • ADA Compliance: Call for information on ADA-compliant access ramps, doors and controls.

Available Environmental Control System

Standard cleanroom comes with analog pressure gauge and on/off controls; optional touchscreen FFU controller monitors, controls and logs internal pressure, as well as displaying temperature and RH.

BioSafe Cleanroom Sterilization

Ceiling panel covers allow wash-down and sterilization of cleanroom walls and ceilings without damage to filter medium; requires BioSafe glass or stainless steel wall panels, which stand up to biocides.

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

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.

Available Accessories

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Aluminum Frame Swing Door
    Light-weight, easy to install, and includes concealed pneumatic door closer.
  • Strip Shield Doors
    Strip Shield Doors provides access for areas that don't require strict airflow
  • Aluminum Frame Sliding Door
    This aluminum-frame door slides open along an extruded aluminum track to an opening of 36" (914 mm)
  • Germicidal UV Lamp Sanitizes Labs, Cleanrooms
    UV-C Germicidal Lamp installs on a cleanroom ceiling grid for line-of-sight room disinfection; safety occupancy sensor prevents personnel exposure.

Products similar to this one

Buy Accessories

Manuals & Resources

Manuals & Resources

Filter Fan Units Prevent Infection

Blog Post

Air Shower Protection for Cannabis Grow Rooms

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.

You need at least 2 products to compare Compare Clear All
Compare Products