Tested and Certified to The Highest Industry Standards

IRISS IR windows are the most certified windows in the industry with IEEE (impact & load), UL, cUL, Lloyds, CSA 22.2 14-13 for industrial control equipment. Our marine certifications are Lloyds, DNV and ABS (American Bureau of Shipping) credentials. IRISS IR windows are also arc tested to IEC 62271-200 Arc Flash Spec test 1.1 Second Duration, IEC 60262271-200: 63kA, IEC 60298 Appendix: 63kA, IEEE C37.20.7 Type 2B: 63kA.

Environmentally Sealed Design

The VPFC Series of products are constructed from switchgear grade Nylon plastic with an aluminum cover and stainless steel mounting screws. Seamless custom gaskets ensure the NEMA4 / IP65 ingress protection rating is maintained.

Proudly Made in the United States

IRISS manufactures and assembles all products at our global headquarters located in Bradenton, FL.

Protected by our Limited Lifetime Warranty

The IRISS Limited Lifetime Warranty protects against any manufacturer defects for the life of the product. However, as with all other manufactures of crystal IR windows, the optics as all crystal optics will degrade and fail over time.


Model VPFC-50 VPFC-75 VPFC-100
General Specifications
NEMA Enviroment Type IP65 / NEMA 4
Voltage Range Any
Operating Temperature -40°C (-40°F) to 325°C (617°F)
Body and Cover Material Powder Coated 5052 Aluminum
Hardware 316 Stainless Steel
Gaskets UL 94 5VA TPE; -40°C (-40°F) to 273°C (523°F)
Dimension and Optic Specifications
Optic Material Calcium Fluoride Crystal (CaF2); -100°C (-148°F) to 1400°C (2555°F)
Viewing Aperture Dimensions 5.1 cm (2.0 in) Ø 7.6 cm (3.0 in) Ø 10.2 cm (4.0 in) Ø
Overall Dimensions  9.1 cm (3.6 in) Ø  12.1 cm (4.8 in) Ø  15.1 cm (5.95 in) Ø
Overall Thickness  2.6 cm (1.0 in)  2.6 cm (1.0 in)  2.6 cm (1.0 in)
Inspection Capabilities and Applications
Midwave IR Yes
Longwave IR Yes
Ultraviolet (UV) Yes
Visual Inspection Yes
Medium/High Voltage Applications Yes
Outdoor Applications Yes
High Temperature Applications Yes
Ratings and Testing
UL 50V & UL 50E Standard for Infrared Viewports & the environmental ratings , which apply to enclosures.
UL 746C & UL 746A-2012 Impact and flame resistance standards for polymeric components.
UL 1558 Impact and load resistance for low voltage, metal enclosed assemblies.
UL 508A/ ANSI 508A Industrial Control Panel Standards.
CSA C22.2 No. 14-13 CSA Standard for Industrial Control Equipment
CSA C22.2 No. 14-10 CSA Standard for Low Voltage Distribution and Control Equipment
CSA C22.2 No. 94-M91 This Standard applies to special purpose enclosures for electrical equipment intended to be installed
CSA C22.2 No. 94.1-07 This Standard applies to special purpose enclosures for electrical equipment intended to be installed and used in non-hazardous locations.
CSA C22.2 No. 94.2-07 Standard applies to Enclosures for Electrical Equipment, Environmental Considerations.
IEEE C37.20.7 Type 2B Defines switchgear arc resistance from the front, sides and rear. Type B specifies arc resistance is maintained, even when opening designated, low voltage equipment.
IEC 62271-200 Specification equirements for pre-fabricated metal enclosed switchgear and control gear above 1 kV and through 52 kV. Enclosures may include fixed and removeable components and have various insulating properties.
IEC 60068-2-6:2007 Environmental testing- Vibration.
IEC 60068-2-3 Environmental testing- Damp heat, steady state.
IEC 60068-2-78:2012 Environmental testing- Extreme humidity withstand.
American Bureau of Shipping (ABS) A classification society, with a mission to promote the security of life, property and the environment through desin verifications standards for marine related operations.
DNV P261.1E Maritime, Vessel & Offshore A global quality assurance and risk management company that provides classifications and design validations to products used in the maritime, vessel and offshore industries.
Lloyds of London Type Approval LR provides independent approval certificates, validating a product’s confirmity within specific standards and specifications. It also validates quality production by design reviews, site audits and type testing.
Warranty Unconditional Lifetime Warranty

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