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FLIR IRW-4C InfraRed Window 4

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Catalog #: 19252-100
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FLIR IRW InfraRed Window 4" (O.D. 5.01"/127mm)


  • Minimizes time and cost of complying with NFPA 70E requirements for electrical inspections
  • Decreases risk of arc flash incidents and injuries (compared with other inspection methods)
  • Perform both Visual andThermal inspections through the broadband crystal window which is compatible with all thermal cameras and UV, Visual and Fusion inspections (Fusion requires a camera with LED light feature)
  • Integrity and environmental ratings of cabinets are intact even after installation
  • Rugged anodized aluminum frame & cover
  • Hinged cover always stays attached to base unit (minimizes risk of dropping parts aroundelectrical cabinets)
  • Windows are sized to match dimensions of standard knockout punches
  • Easy to install — 3 step installation
  • Provides approx. 30x more holding surface area securing the window to the cabinet door (vs.mounting screws)
  • Mount on steel and Lexan panels
  • No screw holes to drill or screws to attach
  • Window labeling/ID# inside the cover
  • Limited Lifetime Warranty against manufacturer defects
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Sale: $399.99
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Compare Products in this Series

Product Name Nominal Diameter Viewing Apeture Diameter Viewing Aperture Area Availability Price
FLIR IRW InfraRed Window 4" (O.D. 5.01"/127mm)
4 IN 3.5 IN 9.64 in²
FLIR IRW Stainless Steel InfraRed Window 2"
FLIR IRW Stainless Steel InfraRed Window 4"
FLIR IRW Stainless Steel InfraRed Window 3"
FLIR IRW InfraRed Window 2" (O.D. 2.87"/73mm)
2 IN 1.7 IN 2.46 in²

FLIR IRW-4C Thermal Imager InfraRed Window 4 FLIR Systems IRW4C IRW 4C IRW-4C

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Product Information

IRW-4C InfraRed Window 4" (O.D. 5.01"/127mm)

Introducing FLIR IRW-Series for Safer, More Efficient Electrical IR Inspections

Opening electrical cabinets to perform IR and visual inspections of live components is dangerous work, exposing you to the risk of a hazardous arc flash incident. Out of necessity, it’s also a painstaking,time-consuming process.

Now you can put the added safety of new FLIR IR Windows between you and energized equipment to better protect yourself and eliminate the need for opening enclosures. Much easier to install and use than other brands, FLIR IR Windows help you work faster with greater confidence. Perform inspections more efficiently and reduce the threat of arc flash injury significantly so you can get more done and stay in compliance with NFPA 70E requirements.
All FLIR IR Windows feature a secure, permanently-hinged cover that opens easily with one hand, which means there’s nothing to remove, drop, mix up, or lose. FLIR’s broadband crystal allows cameras to
capture visible light pictures as well as thermal images and lets LED and laser illumination pass straight through for clearer visual assessments.

Combine FLIR IR Windows with a FLIR thermal camera that features integrated visible light video, lamps, and a laser pointer, and you’ll be set to get the job done single-handedly.


  • Arc resistant
  • Approximately 30x more holding
  • surface area
  • Broadband Crystal
  • For Indoor/Outdoor use
  • Waterproof meets IP65
  • Available in 2", 3" or 4" diameter
  • Limited Lifetime Warranty

PIRma-Lock makes FLIR IR Windows easy to install!


Model 19250-100
NEMA Environment Type Type 4/12 (outdoor/indoor) Type 4/12 (outdoor/indoor) Type 4/12 (outdoor/indoor)
Voltage Range Any Any Any
Automatically Grounded Yes Yes Yes
Maximum Operating Temperature 500°F/260°C 500°F/260°C 500°F/260°C
Body Material Anodized Aluminum Anodized Aluminum Anodized Aluminum
Gasket Material Silicone Silicone Silicone
Hardware Material Steel Steel Steel
Compatable with All FLIR Cameras Yes Yes Yes
PIRma-Lock Installation System Yes Yes Yes
Cover and Fastener Permanently Attached Yes Yes Yes
Single-hole Installation Yes Yes Yes
Thumb Screw and Safety Screw Included Yes Yes Yes
Broadband IR -- Short-, Mid-, & Longwave Yes Yes Yes
Visible Light Spectrum Yes Yes Yes
Picture-in-Picture & Fusion Image Blending Yes Yes Yes
Size Specifications
Overall Height 85.5mm (3.36”) 107.4mm (4.22”) 136.5mm (5.37”)
Overall Width 77mm (3.03”) 99mm (3.89”) 127.44mm (5.01”)
Overall Thickness 25.5mm (1.00”) 26.86mm (1.05”) 29.25mm (1.15”)
Required Actual Hole Diameter (Nominal) 60.3mm (2-3/8”) 88.9mm(3-1/2”) 114.3mm (4-1/2”)
Greenlee Punch 76BB 739BB 742BB
Recommended Max Panel Thickness 3.2mm (1/8”) 3.2mm (1/8”) 3.2mm (1/8”)
Optic Specifications
Optic Diameter 50mm (1.97”) 75mm (2.95”) 95mm (3.74”)
Viewing Aperture Diameter 45mm (1.77”) 69mm (2.71”) 89mm (3.50”)
Viewing Aperture Area 1590mm² (2.46in²) 3739mm² (5.79in²) 6221mm² (9.64in²)
Optic Maximum Temperature 1355.6°C (2474°F) 1355.6°C (2474°F) 1355.6°C (2474°F)
Ratings & Testing
UL Component Recognition (UL 50V) Yes Yes Yes
UL 50 / NEMA Environment Rating Type 4/12 Type 4/12 Type 4/12
Arc Flash Testing, IEC 62271-200 (KEMA) 5kV, 63kA for 30 Cycles at 60Hz
IP Rating, IEC 60529 (TUV) IP67 IP67 IP67
Vibration Testing, IEC 60068-2-6 (TUV) 100 m/s^2 Vibration Withstand
Humidity Testing, IEC 60068-2-3 (TUV) Extreme Humidity Withstand
Mechanical Testing, ANSI/IEEE C37.20.2 section A3.6 (TUV) Impact and Load Resistant Cover
Maximum Pullout Strength 657 kg (1450 lbs) 1655 kg (3650 lbs) 1678 kg (3700 lbs)

FLIR IRW-4C Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Thermal Imagers/IR Windows for Thermal Imagers Template

Nominal Diameter4 IN
Viewing Apeture Diameter3.5 IN
Viewing Aperture Area9.64 in²
Thickness4 MM
Install with Greenlee Punch What's This?Yes 
Security Key Door Latch What's This?No

Test Equipment General Attributes

Unique Features-Easy Installation – Only one hole to drill and FLIR's single PIRma-Lock™ ring nut to tighten; same design as conduit connections that use standard US punch tools
-Quick Access Hinged Cover – simple flip-open cover
Warranty DetailsLimited Lifetime Warranty Against Manufacturer Defects
Safety ApprovalCSA, UL
IP Rating What's This?IP67
Product Height5.37 IN
Product Length1.15 IN
Product Width5.01 IN
Shipping Weight1.5 LBS
ECCN NumberEAR99
HTS/Schedule B Number7007290000
Country of OriginEstonia



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