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Convert unclassified space into a cleanroom of any size or floor plan!

Modular Hardwall Cleanrooms

Terra's Modular Hardwall Cleanrooms provide the rigidity and durability of a freestanding room, unlike other modular structures that require internal bracing or ceiling supports. Select among five different panel materials and many lighting, pass-though and other options. All components are factory-assembled and tested before shipping. The modular ceiling grid allows fan/filter configuration to meet ISO 5 – 8 requirements.


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Terra hardwall modular cleanroom with split A/C system: heat generating compressor roof mounted, with cool air ducted to cleanroom.
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Terra hardwall cleanroom housing vacuum chamber at University of Toronto Microsatellite and Technology Center.
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Sound and vibration testing equipment inside Terra hardwall cleanroom at University of Toronto Microsatellite and Technology Center.
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Terra hardwall cleanroom housing auto-fill equipment
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ISO 7 polycarbonate modular hardwall cleanroom used for eLiquid bottling in a clean, FDA-compliant environment
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ISO 6 Hardwall Cleanroom used in bearing assembly and lubrication
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Installation of ISO 7 polycarbonate hardwall cleanroom used in nutraceutical processing.




  FEATURES & BENEFITS | Hard Wall Cleanroom
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Cleanroom Panels designed for all Applications
-Static-Dissipative PVC
-Tempered Glass -Stainless Steel
IsoVent™ Panel Mounting Design
Center-, interior- or exterior-mount panels reduce installation costs and simplify cleaning. Panel gaps allow uniform air release along entire room perimeter, eliminating "dead zones" where particles can swirl.
Smart Cleanroom Access Control Systems
-Smart Access Security Modules
-Personnel-Tracking and Data-logging Capabilities
-Smart Interlock™ System for Doors and Pass-Throughs
Environmental Control Systems
-Provide economical cooling in facilities without adequate HVAC
-Temperature & Humidity Control Capabilities
Free-Standing All-Steel Design
Steel frame members and ceiling joists allow spans of up to 30 feet without internal support columns or ceiling suspension cables.
Versatile Shelf or Bench
Use frame uprights to wall-mount an optional adjustable bench, shelf or counter. Space-saving furnishings keep cleanroom floors clear of table legs.

Hardwall Cleanroom
CLeanroom FRP Wall Panel System
Center-Mount panel design simplifies cleaning, even allows spray-down disinfection (shown with tempered glass panels and all-stainless steel frame)
Features Key

A Status Indicator Lights: Glow to indicate FFUs are operational; flash when FFUs are off
B Select HEPA or ULPA fan/filter units to provide a laminar flow of clean air
C Fluorescent lights (teardrop fixtures available for mounting between fan/filter units)
D Control panel includes temperature/humidity gauge and other selected instruments
E Several door designs: stainless steel, aluminum swing or sliding, electronic
F Select acrylic, static-dissipative, glass or polycarbonate panels
G Steel supports require no external bracing
  Options include Night Service setting, pass-throughs, A/C, vacuum, DI water and gas utilities
IsoVent Mounting System
304 stainless steel clips position panels securely to frame. Small air gaps along panel perimeter sustain positive pressure and ensure uniform air release along room perimeter, eliminating dead zones throughout the cleanroom where particles swirl but cannot exit. Versatile system allows panel mounting flush with the interior or centered on steel support frame.

Hardwall Cleanrooms Dissipative Plastics
Panel Material
(see description
Acrylic* Polycarbonate Polypropylene Tempered Glass
0.25" thick
Cat. # Price Cat. # Price Cat. # Price Cat. # Price Cat. # Price
Interior-Mount 6600-05A Price 6600-07A Price 6600-08A Price 6600-39A Price 6600-06A Price
Center-Mount 6600-63 Price 6600-64 Price 6600-68 Price 6600-69 Price 6600-73 Price
External-Mount for Negative Pressure 6600-00A Price 6600-02A Price 6600-03A Price 6600-38A Price 6600-01A Price

*Acrylic is damaged by alcohol and other cleaning agents.
modular hardwall cleanroom screen frame   Pass-Through in Modular Hard Wall Cleanroom

220V, 50Hz FFUs
  Pass-Throughs for Hardwall Cleanrooms.
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See Below
Cleanroom Client List
Dozens of customers for
Terra modular cleanrooms
Terra cleanroom walls are made of durable, easy-to-clean, ISO-grade materials, as specified in FDA guidance documents. Combined with your cGMP processes, they will help you comply with operational requirements.
Videos icon Modular Cleanroom Installation and Testing
Time Lapse of a modular cleanroom being
erected and tested prior to shipping.

Cleanroom Support Frame

The support frame is fabricated of interlocking 2" (51 mm) powder-coated square steel uprights and cross sections (stainless steel frames also available, specify when odering). Ceiling members are welded to steel 3" x 1.5" (76 mm x 38 mm) T-bars, forming the 2' x 4' (610 mm x 1219 mm) bays that support filters and lights. Standard height is 7' (2134 mm) measured from filter face to floor (8'3", 2530 mm, with filter/fan unit), allowing installation beneath a standard 9' (2743 mm) ceiling. Other heights are available.

Hardwall Cleanroom Panels

Modular hardwall panels are cut in 4'-wide x 7'-high (1219 mm x 2134 mm) panels. Specify other desired height. They are available in several rigid materials:

Acrylic Panels offer full visibility and outstanding tensile strength. These economical panels are lightweight and easy to clean. Standard panels are clear, but black and amber panels are also available (tinted panels may extend lead time). Acrylic is not recommended for use with alcohol or other strong cleaning agents.

Static-Dissipative PVC Panels are recommended for the most contamination-sensitive applications because of their ability to control particles along with static charges. The friction created by a laminar airflow generates surface charges on nondissipative walls, which in turn attract and hold particles. Your cleanroom wall becomes a particle magnet!

Dissipative PVC safely conducts these surface charges to ground, protecting against potentially damaging ESD (electrostatic discharge) as well as particulate contamination. Dissipative layers are molecularly embedded for optimal durability. Surface resistivity: 106 - 108 ohms/sq. cm (ASTM-D257).

Polycarbonate resists many common acids, solvents and cleaning solutions. Its high tensile strength makes it shatter resistant.

Polypropylene provides superb resistance to acids and other chemicals.

Tempered Glass combines visual clarity with broad chemical resistance and non-porous surfaces for easy sterilization.

FRP Room BioSafe® FRP/C-PVC Cleanrooms
smooth, FM-approved inside panels for easy cleaning and sterilization
Automated FFU control systems help meet FDA and other compliance regulations. Add options including environmental monitoring and data logging. Click for details

IsoVent™ Cleanroom Panel Mounting System
Retaining clips mounted along the cleanroom perimeter attach each cleanroom panel securely to the steel frame, creating small air gaps along the panel edges that sustain positive pressure while ensuring uniform air release along the entire room perimeter, independent of filter configuration. Unlike conventional air exhaust registers, this mounting system eliminates dead zones throughout the cleanroom where particles swirl and aggregate but cannot exit. This versatile system allows panel mounting flush with the internal cleanroom surface, or centered on steel support frame. External-mount panels maintain tighter seals required in negative-pressure (containment) applications.

Hardwall Cleanroom Ordering Information

Specified rooms include powder-coated steel frame, control panel, and wall panels of material specified (see ordering chart). Select access door(s), ceiling modules and other accessories to complete your system. Contact your Terra Technical Specialist for additional pricing on installation services and special reports, including seismic analysis and Installation Qualification/Operation Qualification (IQ/OQ) documentation.
Before you order,
  Consider Your Options!
    Specialty Plastics
    Specify any of these systems in dozens of other materials.
    QuickQuote Planner
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Don't Turn Your Clean Enclosure into a Particle Magnet!
Non-dissipative plastics quickly accumulate surface charges that attract contaminants. If the panel on the left clings to this many test spheres, just imagine how many micro-particles it attracts

Recommended Air Velocity Rates
ISO 146144-1

(Standard 209E)
Airflow Velocity
m/s (ft/min)
Air Changes
Per Hour
ISO 8 (Class 100,000) 0.005 - 0.041 (1 - 8) 5 - 48
ISO 7 (Class 10,000) 0.051 - 0.076 (10 - 15) 60 - 90
ISO 6 (Class 1,000) 0.127 - 0.203 (25 - 40) 150 - 240
ISO 5 (Class 100) 0.203 - 0.406 (40 - 80) 240 - 480
ISO 4 (Class 10) 0.254 - 0.457 (50 - 90) 300 - 540
ISO 3 (Class 1) 0.305 - 0.457 (60 - 90) 360 - 540
ISO 1-2 0.305 - 0.508 (60 - 100) 360 - 600
Note: Actual average velocity and air changes required may vary depending on the application and floor plan. Source: Institute of Environmental Sciences and Technology
Recommended Ceiling Filter Coverage (per IEST)
Class Ceiling Coverage
ISO 8 (Class 100,000) 5 - 15%
ISO 7 (Class 10,000) 15 - 20%
ISO 6 (Class 1,000) 25 - 40%
ISO 5 (Class 100) 35 - 70%
ISO 4 (Class 10) 50 - 90%
ISO 3 (Class 1) 60 - 100%*
ISO 1-2 80 - 100%*
Note: Actual average velocity and air changes required may vary depending on the application and floor plan, including ceiling height.
* ULPA filters required in Class 1/10 applications. HEPA filters required for all others.
Declaration of UL Listing
Includes declaration of system listing under UL File E472687, including all high-voltage Modular Cleanroom electrical components integrated into Power Distribution System (Terra Nos. 6600-29B-P, 6600-29B-S, 6600-29B-B, 6600-29B-P-220, 6600-29B-S-220, 6600-29B-S-220, 6600-27, 6600-27-220). UL listing helps meet municipal and other permitting requirements that may apply, while ensuring the safety and integrity of electrical components.
Cat. # Price
6600-33 call TUI
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Cleanroom QuickQuote

Hardwall Cleanroom Options

Night Service Switch

  • Energy-saving mode saves 25% of fan operating costs by reducing power consumption during off-hours
  • Maintains round-the-clock cleanroom integrity at lower cost
  • Easy to activate via panel-mounted switch (Wireless Cleanroom Control System also available)

Why Pay More for Less?
Terra cleanrooms are designed to meet a specified ISO cleanliness rating when a cleanroom is in use: with operations in progress, process machinery humming, and personnel in motion. So why pay to maintain that level of FFU performance when a production shift ends and people, the greatest source of contamination, leave the room?

With a greatly reduced contaminant load, a cleanroom at rest maintains its target ISO cleanliness standard with much less airflow, fewer air changes—and decreased power consumption. Terra’s Night Service Switch provides this cleanliness at a nominal cost, giving you immediate cost savings.

Simply select the “Night Service” Switch when you turn off the lights and go home. A separate operation circuit drops all Fan/Filter Units (FFUs) into low-energy operation mode, shaving 25% of energy costs off your power bill while maintaining uninterrupted cleanroom performance at your specified cleanliness level. With Terra's Night Service Switch, operators can save up to 7,000 kilowatt-hours per year with a return on investment in slightly over a year.**
Ordering Information
A complete system includes fan/filter units and Terra's standard Power Distribution Modules (order separately), in addition to the units specified below. The Night Service Switch includes electronic configuration of each FFU controlled by this system. The Control Panel includes switch settings and indicator lights for Normal Mode and Night Service Mode, as well as a tamper-resistant master FFU Off switch.
Night Service Switch
Order one per Fan Filter Unit Cat. # Price
120VAC, 60Hz 6601-70 Price
Control Panel for Night Service Switch
Order one per cleanroom 120VAC, 60Hz 220VAC, 60Hz
Cat. # Price Cat. # Price
Hardwall Cleanroom, External Mount Panels 6600-23-NS Price 6600-23-NS-220 Price
Hardwall Cleanroom, Internal Mount Panels 6600-24-NS Price 6600-24-NS-220 Price
Comparative Specifications:
2’ x 4’ (600 x 1210 mm) Terra Fan/Filter Unit No. 6601-24-H, operating at High, Medium, and Night Service setting
Operation Setting: High Speed* Medium Speed* Night Service
Airflow: cfm (m^3/hr) 808 (1373) 717 (1218) 654 CFM (1111)
Air Speed: ft/m (m/s) 115 (.58) 102 (0.51) 93 ft/min (0.47)
Run Amps (Watts): 4.3 (512) 3.5 (416) 3.3A (393W)*
*25% savings over operation on high speed
**Based off of an average-sized cleanroom with 10 FFU's, active cleanroom usage of 8 hours per day, and the U.S. Energy Information Administration's given average retail price of electricity at 10.72 cents per kilowatt-hour.
Aluminum Frame Sing Door Aluminum Frame Sliding Door

Aluminum Frame Swing Door

Aluminum Frame Sliding Door

Aluminum frame with choice of acrylic or static-dissipative PVC panel and pneumatic closure. Standard mounting is on right panel of shorter wall; specify other desired location. Standard swing is outward (away from room).
This aluminum-frame door slides open along an extruded aluminum track to an opening of 36" (914 mm). Requires two 4-foot (1219 mm) panels for installation. Standard model slides open from right to left; specify left to right slide, if desired. Overall dimensions: 40" W x 82" H (1016 mm x 2083 mm)

Door Panel Material Single Door
81"H x 36"W
(2057 x 914 mm)
Double Door 
81"H x 72"W
(2057 x 1829 mm)
Cat. # Price Cat. # Price
Acrylic* 6710-14A Price 6704-00A Price
Static-Dissipative PVC 6710-15A Price 6704-01A Price
*Acrylic is damaged by alcohol and other cleaning agents
Door Panel Material Cat. # Price
Acrylic* 6704-02 Price
Static-Dissipative PVC 6704-03 Price
*Acrylic is damaged by alcohol and other cleaning agents

Stainless Steel Swing Doors

Stainless Steel Swing Door
Select 304 or 316 stainless steel frames for optimal cleanliness, durability, and chemical resistance. Transparent door panels are available in tempered glass, which is ideal for aseptic operations requiring wipe-down with alcohol and other disinfectants, as well as static-dissipative PVC, which eliminates static-charge build-up. Standard swing is outward (away from clean room). Select mirror or brush finish. Dimensions: 36"/72"W x 81"H (914 mm/1829 mm x 2057 mm).
No. 6602-00 Tempered Glass
Door Panel with Mirror-Finished 304 Stainless Steel Frame


(see photo)
Door Panel
Mirror Finish Brush Finish
Single Door Double Door Single Door Double Door
Cat. # Price Cat. # Price Cat. # Price Cat. # Price
304 SS Swing* Tempered Glass 6602-00 Price 6602-04 Price 6602-80 Price 6602-84 Price
304 SS Swing* Static-Dissipative PVC 6602-01 Price 6602-05 Price 6602-81 Price 6602-85 Price
* Standard swing is outward (away from cleanroom)

Automatic Door

Automatic Sliding Door
Automatic Sliding Door Systems
These cleanroom sliding doors are available in Single Slide or Bi-Part (double sliding) configurations in a variety of colors and customizable sizes. Models meet the demands of research, healthcare and educational institutions. Advanced security and safety options are available.
  • All glass doors minimize obstructive sight lines and provide hand-free entrance into cleanrooms
  • Models include a touchless motion door sensor for hands-free operation of doors
  • Fiberglass reinforced toothed timing belt
  • Microprocessor controller continually monitors door position with adjustable opening & closing speed, distance and speed of braking, reduced opening and time delay
  • Auto reverse on obstruction; slow speed search for obstruction
  • Load-bearing wheels made of cast urethane for long-lasting, smooth and trouble-free operation+
  • Adjustable anti-riser wheels lock each door in its track
  • Toothed drive belt reinforced with fiberglass to prevent slippage and ensures even closing
  • Doors undergo life testing to a minimum of 1 million cycles
  • Quick installation with pre-assembled header and panel sub-assemblies
  • UL-listed and ANSI compliant
  • One-year manufacturer warranty for parts and labor
All Glass Sliding Door Systems
Description Dimensions Cat. # Price
Dura-Glide 2000 Single Slide 96"H x 92"W (2438.4 x 2336.8 mm) 5555-00 Price
Dura-Glide 2000 Bi-Part Double Slide 147.825"H x 92"W (3754.755 x 2336.8 mm) 5555-01 Price
Optional Features
Cleanroom Rating Class 1 or 2 Cleanroom rating for cleanrooms and computer centers
Wind Resistant Damper Improves safety and lessens repairs costs by withstanding wind gusts two times more than standard door package
Glass Door and Sidelights Provides an aesthetically pleasing appearance
Position Switch Single or Dual
Alarm Contacts Optional
Transom Optional
Threshold Configurations Continuous Double Bevel threshold specified
Emergency Power Options Uninterruptible Power Supply (UPS); extended operation
Fly Open Box; One-time operation
Locking options (2-Point locking specified
  • 3-Point Locks
  • Lock position indicators
  • Armored strikes
  • Electric Solenoid Lock (Fail Safe/Fail Secure)
  • Access Control Locking with surface or recessed panic hardware
Description Standard Optional
Design Bi-Part of Single Slide
Breakout Series 2000 Sliding Panels Only or Series 3000 Full Breakout
Jamb Dimension 1 3/4" x 4 1/2" 1 3/4" x 6"
Finish Clear or Dark Bronze Special Finish Available
Glass 1/2" tempered with polished edges
Locking Single Point Bottom Rail Deadlock(s) Electric Locking
Controls Rocker Switch Rotary, Keyed Rotary Controls
Sensors 2 SU-100s / Stanguard 2 Wizards
Drive System ¼ HP DC gear driven motor, twin ¼ HP DC gear driven motors (optional)
Material Door Panels: Glass, Aluminum, Wood, Metal or Custom
Compliance UL, cUL, ANSI A156.10, UBC, BOCA, ICBO, NFPA 101
STANLEY SU-100 MOTION SENSORS Uni-directional function reduces length of time door stays open by detecting approaching traffic; saves energy by preserving loss of heat and air conditioning
Stan-Guard® Threshold Sensor Configurable Options: threshold sensor and doorway holding beam detects and holds the door open for people and objects until area is clear
Recessed Panic Hardware Provides security and easy access in emergency situations. Flush mounted panic hardware extends to a minimum of half the door width. Non-handed, single size push bar accommodates door panel widths from 16" to 54" and integrated into a 4/25" muntin bar
Battery Backup Extends operation of automatic doors up to 1.5 hours in event of power outage or failure

Automatic Door
Similar to standard swing doors above, but adds a touchpad activated opening mechanism for easy operation.

Frame Type Door Panel Material Cat. # Price
304 SS Swing Tempered Glass 6602-15 Price
304 SS Swing Static-Dissipative PVC 6602-16 Price
316 SS Swing Tempered Glass 6602-17 Price
316 SS Swing Static-Dissipative PVC 6602-18 Price
Aluminum Swing Acrylic* 6711-08 Price
Aluminum Swing Static-Dissipative PVC 6711-07 Price
* Acrylic is damaged by alcohol and other cleaning agents.

Strip Shield Door

Strip Shield Door
Strip shields can be mounted in place of a standard door or 4-foot (1219 mm) hardwall panel at any location along the perimeter of the cleanroom. Click Here for ordering information.

Control Panel with Operation Status System

control panel
Control Panel
Status Light
Mounted to the right of the access door, this panel allows convenient control of filter/fan units, lights, ionizing modules, and other environmental monitoring equipment selected for your hardwall modular cleanroom. Fabricated of mirror-finish 304/316 stainless steel or powder-coated steel to match cleanroom design. This system includes top corner operation status indication (OSI) lights that display cleanroom status: lights glow when FFUs (fan/filter units) are in operation, and flash intermittently to indicate they are off. For Hardwall and BioSafe® Cleanroom designs only, it includes a Magnehelic® Differential Pressure Gauge (0.25-0-0.25"WC).

Panel with OSI Volts, Hz Cat. # Price
For Internal-Mount Panels 120VAC, 60Hz 6600-24 Price
220VAC, 50/60 Hz 6600-24-220 Price

Control Panel allows convenient control of Fan/Filter Units, lights and other system controls. Operation Status Indicators in each corner display FFU operation. One required per cleanroom.

Cat. # Price
6600-26-NS Price

Other Options

Removable Service Panel
Allows convenient servicing of equipment installed inside the enclosure, with minimal disruption of the internal environment.

  Cat. # Price
Removable Service Panel 6704-04 Price

Partitions & Ante-Chambers
Antechambers serve as contamination buffer zones; as staging areas; or as gowning areas. Partitions create multiple clean zones to meet varying cleanliness requirements inside a single cleanroom.

Call To Specify
Acrylic* Dissipative PVC Polycarbonate Polypropylene
Cat. # Price Cat. # Price Cat. # Price Cat. # Price
Partition 6600-10 Price 6600-11 Price 6600-12 Price 6600-13 Price
Antechamber 6600-15 Price 6600-16 Price 6600-17 Price 6600-18 Price
* Acrylic is damaged by alcohol and other cleaning agents.
Note: Partitions and antechambers must be specified when cleanroom is ordered.

Cleanroom Accessories

Other Modular Cleanroom Styles

File Type File Name Publication Date
Video On-Site Hardwall Cleanroom Installation
Video showing installation of a hardwall, modular cleanroom at a customer site. The room is tested at the factory, then shipped overseas to be installed. Framing, paneling and utilities are assembled according to the customer specifications.
Video Installation Test of a Modular Hardwall Cleanroom
Time-lapse video of a multi-chamber modular hardwall cleanroom being erected and tested prior to shipping. The steps cover preparation, framing, panel placement, and A/C return ducting installation.
Video Don't Turn Your Clean Environment into a Particle Magnet!
Non-dissipative plastics quickly accumulate surface charges that attract contaminants. If this quantity of test spheres clings to the panel on the left, just imagine how many micro-particles it attracts!
Video High-Speed Roll-Up Cleanroom Doors
High-speed operation allows between-room transfer of large carts and equipment in a high-cycle operation. Watch it in action with this video.
White Paper (PDF) BSL Explanation
Understand Biological Safety Levels (BSL) by reading this summary of the CDC's specifications for working with infectious agents.
Tech Resource (PDF) Calculating Clean Room Cleanliness: How many FFUs and Lights?
This tutorial provides practical tips for correlating the desired cleanliness level (per ISO/FS209 standards) to the required number of fan/filter units (FFUs). Also provides guidelines for specifying lights based on the type of operations being conducted.
FAQs (PDF) Frequently Asked Questions about Cleanrooms
Answers to both basic cleanroom questions as well as specific inquiries about Terra-made rooms. Useful insight for people with a new cleanroom, or thinking about ordering one.
Manual (PDF) Hardwall Cleanroom, External-Mount Panels: Doc. # 1800-30
This manual includes installation and operating instructions for Terra's Hardwall Cleanrooms that feature an internal frame design, with the wall panels externally mounted to the frame using stainless steel trim strips.
Manual (PDF) Hardwall Cleanroom, Center-Mount Panels, Doc. # 1788-30
This manual includes installation and operating instructions for Terra's Hardwall Cleanrooms that feature center-mounted wall panels.
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