Cleanroom Windows

BioSafe & ValuLine Windows

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Cleanroom Window Frequently Asked Questions

What are the hidden benefits of cleanroom windows?

Terra’s cleanroom windows are specifically designed for healthcare, pharmaceutical, and GMP manufacturing applications to help achieve FDA compliance. These easy-to-clean hygienic windows enhance visibility of operations and foot traffic without jeopardizing GMP design standards.

Our cleanroom window designs allow for easy installation to both modular or stick-built cleanrooms. Flush mount frame designs lay flat against both sides of the wall for a seamless finish. The absence of horizontal surfaces and crevices reduces areas where contaminants can collect and makes them easy to clean. Furthermore, the modern design of these cleanroom observation windows provides a showroom finish with a stylish aesthetic that aligns with contemporary architecture.

Framed vs. frameless cleanroom window designs

Frameless Flush Mount Cleanroom Windows

Frameless cleanroom windows feature a fully flush mount design with an attractive black border integral with the glass pane. This design allows the entire glass pane to mount flat against the wall for a truly seamless easy-to-clean finish. The black border on these flush mount windows is behind the glass pane so it can’t scratch or degrade over time.

Terra’s flush mount cleanroom windows feature a unique mounting system with no visible external fasteners or hardware for a showcase appearance. Frameless windows include 0.25”-thick tempered glass that overlays the wall surface on one or both sides. The glazing is attached to an internal stainless steel frame that is designed for quick, easy installation in a variety of wall materials and thicknesses.

BioSafe Frameless Tempered Single Glass Window

Frameless double glazed flush mount cleanroom window exploded view diagram

Framed Flush Mount Cleanroom Windows

Framed cleanroom windows offer a low cost alternative to frameless cleanroom window designs for applications with less stringent cleanliness requirements. They feature a 2.75” wide 304 stainless steel outer frame mounted flush to the wall, allowing the glass pane to be recessed into the wall. The continuous seam welded and chemical resistant stainless steel frame provides a smooth, durable, easy-to-clean surface. 316L marine grade stainless steel is available for increased corrosion resistance.

Framed windows are also available in fire-rated designs, featuring a fully fire-rated frame assembly and window glazing, manufactured and tested in accordance with UL 9 and NFPA 80.

Framed windows include 0.5”-thick tempered glass pane. Similarly to frameless windows, framed windows use the same mounting system with no visible external fasteners or hardware for a showcase appearance.

BioSafe Single-Sided Stainless Steel Framed Window Tempered Glass

Framed double glazed flush mount cleanroom window exploded view diagram

Single-Glazed vs. Double-Glazed Construction

Terra offers single- and double-sided cleanroom window configurations. Both feature rigid inner frames constructed of durable and chemical resistant 304 stainless steel.

Single-Sided Cleanroom Window

Single-side construction has a clearly defined "clean" side and "dirty" side: the "clean" side is completely flush with the wall surface whereas the "dirty" side has a horizontal window ledge, which may be useful as a shelf, but may otherwise be problematic in a cleanroom environment that prohibits particle-gathering surfaces.

Double-Sided Cleanroom Window

Double-sided frame construction is designed for the window panes to sit completely flush on both sides of the wall, which makes this design both attractive and ideal for placement between adjacent rooms within a cleanroom.

What glazing options are available for cleanroom windows?

Terra’s cleanroom windows can be outfitted with a variety of glazing options specific to your facilities requirements. Common options include:

Fire-rated cleanroom windows tested to UL standards
Switch glass (smart glass) windows
Glass with integral blinds
Static-dissipative PVC panels for strict ESD-safe cleanroom environments
Polycarbonate panels for impact resistance

What window sizes are available for cleanroom windows?

Terra manufactures its windows to suit any size or wall thickness for both traditional built and modular wall systems. Specify your wall thickness and rough opening dimensions at the time of order.

Terra can also manufacture windows up to 50 square feet to serve as cleanroom viewing panels. Viewing panels are ideal where full floor-to-ceiling viewing sections are preferred.

Windows Gallery

Terra’s flush-mount cleanroom window easily and seamlessly installs into modular and stick-built cleanrooms and labs. Developed specifically for aseptic requirements in bio-pharmaceutical and cGMP cleanrooms, these hygienic cleanroom windows bring more light and visibility to your work space without compromising cleanliness requirements. Choose from easy-to-clean framed or frameless stainless steel designs. Fire-rated cleanroom window designs meet building code requirements to protect your employees, operations and business.

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Features and Benefits

Framed BioSafe Window

Framed design encases window panes with 304 Stainless Steel frame on the exterior. Flush-mount design minimizes crevices where contaminants can collect.

BioSafe Window Designs

Framed and frameless BioSafe windows are designed without exposed hardware or crevices where microbes can colonize.

Single-Window Frame Installation

The window frame is first placed in the wall cut-out from the "clean" side of the room

Double-Window Frame Installation

Fasteners attach the frame to the wall cut-out wood frame through the pre-drilled holes on the bottom, sides and top

Frameless BioSafe Window

Frameless design includes window panes embedded in wall with no visible hardware on exterior. Attractive black faux border is positioned on inside surface of glass to prevent scratching.

Built-in CleanSeam™ Ledge

Single pane BioSafe® cleanroom windows feature a seamless stainless steel ledge on the opposite side of the glass pane for easy sterilization.

Window Design Benefits

Other window manufacturers don’t grasp the issues solved by Terra’s design, improved and refined over the past 40 years

Stainless Steel Cleanroom Window with Blinds Between Glass

Cleanroom windows with built-in blinds between the glass offer clean, versatile visibility. Cordless blinds behind the window prevent tampering and particle accumulation. Adjust them up/down and open/closed with the no-battery, magnetic detachable remote.

Double Pane Flush Mount Window

ValuLine windows for cleanrooms are constructed with a chemical-resistant polypropylene frame and provide insulation with double-pane design.

Window Models

Terra Universal's Biosafe® Windows
Single-Side, Flush-Mount Window; Stainless Steel Frame, 1/4" Tempered Glass Pane
Double-Sided Tempered Glass Windows for BioSafe Steel Cleanroom
BioSafe Flush-Mount Frameless Double Window
Double-Sided Flush-Mount Frameless Window
BioSafe Double-Sided Stainless Steel Framed Window Tempered Glass
BioSafe Double-Sided Stainless Steel Framed Window Tempered Glass
BioSafe Frameless Single Tempered-Glass Window
Cleanroom Barrier Wall with Tempered Glass Windows

Terra's BioSafe windows are configurable to any wall thickness, easy to install and disinfect Terra Universal's Biosafe® Windows Terra Universal's BioSafe® windows are quick to install, easy to disinfect and configurable to any wall material or thickness.

Single-Pane, Stainless Steel Frame Window, fits flush on cleanroom wall surface, installs against supports without special tools. Single-Side, Flush-Mount Window; Stainless Steel Frame, 1/4" Tempered Glass Pane Stainless Steel frame fits flush on cleanroom wall surface, installs against supports without special tools. 1/4" tempered glass window pane.

Attractive frameless windows clean easily and add visibility to BioSafe® cleanrooms. | 6603-15 displayed Double-Sided Tempered Glass Windows for BioSafe Steel Cleanroom BioSafe® modular steel cleanrooms are available with dual-sided, flush-mount tempered glass viewing windows.

Flush-mount BioSafe® frameless design 84” x 40” double tempered glass window BioSafe Flush-Mount Frameless Double Window Unique BioSafe® frameless design seals flush against walls, eliminating surfaces that collect dust.

BioSafe windows feature a flush-mount frame design that minimizes horizontal surfaces and crevices where contaminants can collect Double-Sided Flush-Mount Frameless Window BioSafe windows feature a flush-mount frame design that minimizes horizontal surfaces and crevices where contaminants can collect; 48” x 44” double glass shown.

BioSafe windows feature a flush-mount frame design that minimizes horizontal surfaces BioSafe Double-Sided Stainless Steel Framed Window Tempered Glass BioSafe windows feature a flush-mount frame design that minimizes horizontal surfaces and crevices that collect dust. Installed in retail pharmacy.

Tempered-glass BioSafe® stainless steel frame and two 0.5"-thick single-pane windows BioSafe Double-Sided Stainless Steel Framed Window Tempered Glass Tempered-glass BioSafe® window with stainless steel frame and two 0.5"-thick flush-mount windows for use in conventional walls (specify wall thickness)

Shown: 47” x 36” BioSafe powder-coated cleanroom window flush-mounted in a BioSafe Cleanroom with FRP finish | 6603-26-1202 displayed BioSafe Frameless Single Tempered-Glass Window Frameless design is as stylish as it is clean! Shown: 47” x 36” BioSafe powder-coated cleanroom window flush-mounted in a BioSafe Cleanroom with FRP finish.

Create a barrier between an access corridor and adjacent containment room (optional tempered glass windows) | 6602-59 displayed Cleanroom Barrier Wall with Tempered Glass Windows Create a barrier between an access corridor and adjacent containment room (optional tempered glass windows)

Technical Resources

ARCAT Spec For Windows

ARCAT Specifications Document For Windows

manual [pdf]

BioSafe Cleanroom Windows

This guide contains the installation instructions for single- and double-pane BioSafe Cleanroom Windows, which can be installed either in FRP/C-PVC walls or a conventional brick-and-mortar cleanroom.