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Window Frame

Window Type

Pane Area

Wall Thickness

Pane Material

ISO Class

Terra Part # Price Ships in
Framed Single Pane 12 sq. ft. 4" Switch Glass ISO 6 6603-54 68636 $7,462 40-45 Days 2
Frameless Double Pane 12 sq. ft. 2" Switch Glass ISO 6 6603-55 73995 $8,924 40-45 Days 3
Window Frame
Window Type
Pane Area
Wall Thickness
Pane Material
ISO Class
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Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
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Product Details
Product Details
  • ISO Rating: ISO 6, ISO 7, ISO 8
  • Stainless steel frame fits flush against wall to eliminate surfaces where particles can collect
  • Double window design (frame fits flush on both sides) includes rounded corners for easy cleaning
  • Ideal for patient privacy in medical facilities, constrcuted of medical grade material
  • Exceeds IEST, ASTM, cGMP, ISO 14644-1 standards
  • Mounting system is designed without exposed hardware or crevices for easy disinfection
  • Standard Size: 48”W x 36”H (custom sizing available); specify wall thickness when ordering
  • Switch glass is operated via a wired switch or WiFi remote control; these laminated panels include a liquid crystal layer that provides 97% light transmission when activated by 65V current
  • Window thickness: 0.5” for both switch glass and conventional tempered glass window
  • Minimum wall thickness: 3.375” (86 mm)
  • Designed to your requirements: just give us your critical dimensions, including wall thickness (pre-engineered models available at accelerated led)
  • For FRP/C-PVC Modular Cleanrooms:
  • When included in a cleanroom order, the wall panels will be pre-cut to accommodate the window pane/frame.
  • Standard placement: 39" above the cleanroom floor
  • Maximum window width: 47"
  • For Steel BioSafe Modular Cleanrooms:
  • When included in a cleanroom order, the wall panels will be pre-cut to accommodate the window pane (the walls serve as the "frame" so stainless steel cleanroom windows are all frameless).
  • Standard placement: 24" above the cleanroom floor
  • Maximum window width: 36"

BioSafe Switch Glass Windows

  • BioSafe cleanroom window Terra Universal's Biosafe® Windows
  • Video demonstrates the switch from opaque glass to clear for privacy or viewing purposes Switch Glass Window
  • Comparison of Biosafe Switch-Glass Window on/off Now you see me, now you don't
BioSafe cleanroom window
Video demonstrates the switch from opaque glass to clear for privacy or viewing purposes
Features & Benefits

Features & Benefits

Learn More: BioSafe Switch-Glass Privacy Windows

BioSafe® Switch-Glass Privacy Windows

BioSafe Switch-Glass Privacy Windows
  • Versatile laminated panels with tempered-glass outer layers become conventional viewing windows when energized, opaque privacy panels when de-energized
  • Forms a curtain wall to provide patient privacy in healthcare facilities
  • Ideal for on-demand viewing of sensitive or high-security operations inside medical, pharmaceutical, aerospace and other manufacturing operations
  • Available in BioSafe® framed and frameless designs for use in Terra modular cleanrooms or conventional walls of any thickness (more information)
  • Select standard sizes below or specify custom panes in any size or shape

BioSafe Switch-Glass Privacy Windows provide an elegant, energy-saving way to alternate between viewing windows and privacy panels in a host of industrial, research and government applications.

Operated via a wired switch or WiFi remote control, these laminated panels include a liquid crystal layer that provides 97% light transmission when activated by 65V current. When de-energized, the panel switches to a partially opaque appearance that provides full privacy. The dual-side tempered-glass lamination ensures the same characteristics, including smooth, chemical-resistant surfaces, of standard windows, making these panels easy to clean.

  • An on-demand window for high-security commercial operations: ideal for training or customer viewing of operations that would normally remain private
  • Patient privacy in healthcare facilities: Convenient, easy-to-activate alternative to cumbersome curtains
  • Boardrooms, conference rooms, executive offices: adds convenient display/privacy viewing modes
  • Rear-projection display panel for broadcast, entertainment or commercial presentations
  • Forms an interactive video wall with addition of touch sensors
  • Call Terra to discuss your application!
Frameless Window Design (for BioSafe Cleanrooms)
Framed Window Design (for conventional rooms)
  • Glass Type: All laminated, annealed, heat/chemical strengthened, tempered
  • Thickness:
    • Interior Window: 5/16" (8 mm) or 7/16" (11 mm)
    • Door: 9/16" (14 mm)
    • Exterior: 1" (25 mm) insulating glass unit (3/16" tempered outer glass + 3/8" airspace + 7/16" clear laminated glass)
  • Size: Up to 72" x 145" (1,828.6 mm x 3,683 mm)
  • Shape: Any shape, including holes anywhere
  • Environmental Storage: -20°C to 70°C (-4°F to 158°F)
  • Operation: -10°C to 70°C (14°F to 158°F)
  • Electrical *:
    • Voltage: 120VAC/60Hz to power supply; operates on 65VAC ± 5 volts AC
    • Current: less than 20 mA/ft2
    • Power: less than 1 watt/ft2
  • Switching Time: Approx. 100 milliseconds at room temperature
  • Optical Transmission: 75% view angle approx. 140° scattering effectiveness approx. 1 inch
  • Life: Greater than 10 years (indoors); over 3.5 million switches

* For all fixed panel installation, a separate Power Supply shall be provided for each 60 square feet or fraction thereof. Power source of 110VAC, 60Hz electricity must be supplied from a GFI circuit. The power supply should be connected to an accessible standard double junction box connected to ground continuity. Power supply: Panels may be connected in parallel up to 60 square feet total area per single power supply.

The glass uses less than one watt per square foot in the "ON" (clear) state. No electricity is consumed in the "OFF" (translucent) state. The glass can be controlled with either a single or multiple switches or a remote controller.

BioSafe: Pre-Fabricated Cleanroom Parts

How can Terra offer industry-leading build times and pricing? Our advanced cleanroom design doesn’t require factory pre-assembly; each component fits together perfectly, ensuring seamless on-site installation

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 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.

BioSafe FRP Cleanrooms Installation

After attaching a suitable substrate to Terra’s powder-coated steel frame, the FRP panels adhere to the substrate and a sealant is applied to the seams. Exterior paneling can be installed to match the rest of the facility.

BioSafe®: Terra's Ultimate Cleanliness Rating

Terra's BioSafe products are designed for the most critical applications: no gaps and crevices where microbes colonize, rounded corners for easy disinfection, won't produce contaminants during sterilization, and exceeds cGMP, IEST, ASTM and ISO 14644-1 requirements.

Power Outlets

Power outlets and other utilities can be added and will receive the same sealing treatment as the wall panels.

Sealed Wall Paneling

Fiberglass-Reinforced Plastic (FRP) panels use a specialized seam sealant while C-PVC panels are welded together at the seams.

Cleanroom LED Light Panel with Emergency Power Supply, 2' x 2'

Cleanroom LED lights are equipped with emergency back-up batteries to ensure continued operation in the event of a power failure.

WhisperFlow Quiet Operation Reduces Distracting Background Noise

Exposure to loud noises can lower the ability to focus on work and listen selectively, which may also lead to safety issues. Typical AC units can be annoyingly loud, measuring in the range of 70 dB (comparable to a vacuum cleaner). Terra’s WhisperFlow design produces far lower noise levels for a quiet environment comparable to a library. At 90 ft/min output, units measure under 50 dB from only 1 ft away (roughly 75% quieter than 70dB).

Highest Standards For Electronic Components

Terra’s electronic components are designed and built to the highest standards required by defense and semiconductor industries for long-term reliability and protection against damage, injuries, and electrical hazards.

Seismic Safe Cleanroom Design

Terra’s modular cleanrooms are designed with seismic safety in mind. Rigid steel frames and ceiling grids are designed with sufficient factors of safety to provide vertical and lateral strength recommended by professional engineers. Both hardwall and softwall designs can be installed to adhere to local seismic codes. Optional seismic and structural calculations can be drafted and stamped by a licensed PE to help meet municipal permitting requirements.

High-Throughput Cleanroom Manufacturing

Over the past 5 years, Terra has manufactured nearly 1,500 UL-approved cleanrooms at industry-leading build times. Terra’s versatile modular cleanroom frame and panel designs adapt to any floor plan requirement. The UL-rated and scalable plug-and-play power distribution system further simplifies installment of FFU's and lights to cleanrooms of any size.

4,000 Worldwide Cleanrooms

Since 1976, Terra has designed and manufactured over 4,000 cleanrooms for companies at the leading edge of high technology

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

Products Compliant With Your ISO Rating

Provide Terra with your desired ISO rating. We will tailor the product to meet your rating and supply a certificate of compliance appended to your invoice, to be included in your compliance package. All certificates are archived in Terra's system for quick retrieval.
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