HVAC Viewports

ITM4 Viewports

Viewports are available from 1" up to 4" door thickness. Custom sizes range from 6" x 6" to 24" x 24" with non-thermal break or thermal break viewport glass options. Standard viewports are 8" x 8", 8" x 12" and 12" x 12" viewing size. 

ITM4 Viewports have been tested by an independent laboratory and are safe for viewing UV-C germicidal lamps.

• 6063-T5 extruded aluminum mounting frames
• 1/4" laminated clear glass standard (1/4" wire, misco pattern glass optional)
• Extruded PVC bulb gasket
• Butyl glazing tape
• Zinc-plated screws to secure the inner frame to the outer frame
• Safe for viewing UV-C germicidal lamps

ITM4 Viewport Options

Standard Viewing Sizes:

• 6”x6”
• 8”x8”
• 8”x12”
• 10”x10”
• 12”x12”

Custom viewports can be made up to 24”x 24”.

Construction:

• Single Pane
• Dual Pane/Thermal Break

Glass Type:

• Laminated
• Wire
• Laminated/Tempered
• Wire/Tempered
• Laminated/Laminated (6”x6” only)

Glass Characteristics

Tempered glass under impact.

Laminated glass: Made with an interlayer sandwiched between two pieces of glass. When put under impact energy, it may crack, but tends to remain intact, adhering to the interlayer of laminate material. This provides a strong barrier against forced entry or wind-blown debris. The glass in ITM4’s laminated/tempered viewports is wind-born debris resistant and blast resistant.

Wire glass diamond pattern.

Wire glass: Made with wire mesh embedded in the glass during the
manufacturing process. When put under impact energy, the wire embedded in the
glass holds the broken fragments in place and prevents glass fallout. The glass in
ITM4’s wire/tempered viewports is fire-resistant and shatter resistant. Wire/tempered glass is not acceptable for applications requiring impact
safety rating.

Tempered glass under impact.

Tempered glass: Made with an accelerated cooling process that makes it four to five times stronger and safer than untreated glass. When put under high levels of impact energy, the breakage pattern is similar to little pebbles and reduces the risk of injury. Tempered glass is used as the inside or back glass piece in our viewport
assemblies because it is less likely to have a thermal break and although it is strong,
it is not impact resistant.

ITM4 Viewport Kits

All ITM4 Viewport models are available in kit form for your access doors. Viewport Kits are easy to install in the plant or on the job site. No drilling, no messy caulking!

Broken glass?
Just order a Viewport Kit for those last-minute field replacement jobs! Easy installation instructions are available upon request.