FLIR IR Window 3 in. This device is intended for installation in doors or walls of electrical enclosures without compromising the integrity of the enclosure.The glass is specially formulated to allow transmission of infrared light to allow use of infrared thermal sensing equipment without opening the enclosure. Viewing aperture diameter: 69 mm (2.71 in.)
Operating temperature range: Maximum 260°C (500°F)
Material: Optics: CaF2 (Calcium Fluoride Crystal), Body: Anodized aluminum, Hardware: steel
Compatible with all thermal cameras