FLIR IRW-4C (19252-100) 4" Aluminium InfraRed Inspection Window

FLIR IRW-4C (19252-100) 4" Aluminium InfraRed Inspection Window

The FLIR IRW-4C is a 4-inch aluminum infrared inspection window engineered for safe, repeatable access to energized electrical components during thermal and visual inspections. Its rugged anodized aluminum body and high-performance CaF₂ optics ensure long-term reliability in harsh industrial environments while maintaining excellent infrared transmission across short-, mid-, and longwave bands.

List of contents:

• 1 x InfaRed Inspection Window
• 1 x Case
• 1 x Mounting instructions
• 1 x Additional Safety Screw

Features:

• 4" inspection window for broad field of view
• Anodized aluminum body for corrosion resistance and long service life
• CaF₂ (Calcium Fluoride) crystal optics suitable for short-, mid-, and longwave infrared
• Supports visible light spectrum for visual inspections
• NEMA Type 4/12 rated for indoor/outdoor use
• UL, CSA, and IP67 certified

Specifcations:

• Material:
  • Optics: CaF₂ (Calcium Fluoride Crystal)
  • Body: Anodized aluminum
  • Hardware: Steel
• Maximum Operating Temperature: 260 °C
• Storage temperature range (Optics): Maximum 1357 °C
• NEMA Environment Type: Type 4/12 (Outdoor/Indoor)
• Required Hole Diameter (Nominal): 114.3mm (4.5”)
• Window Thickness: 2mm 
• Crystal Insert Diameter: 95mm (3.74”)
• Greenlee Punch: 742BB
• Overall Thickness: 136.5mm (5.37”)
• Viewing Aperture Area: 6221mm² (9.64 in²)
• Viewing Aperture Diameter: 89mm (3.50")
• Required Hole Diameter, Nominal: 60.3mm
• Visible light spectrum: Yes
• Greenlee Punch: 76BB
• Maximum Pullout Strength: 1678kg
• Certifications: UL / IP67 / NEMA Type 4/12 / CSA
• Dimensions (L × W × H): 165mm × 127.44mm × 136.5mm
• Weight: 0.24kg