The 6004 HVAC/R Series of stainless steel flange thermistor probes is an ideal choice for HVAC air and gas (open-tip model recommended) temperature measurement. These sensors are available in a variety of sizes and flange shapes, with open or closed tips, and with or without brazed flanges. The flanged mount design allows for easy installation in tight areas. This series can be used in mechanical rooms, pipes, ducts, and immersion installations to provide accurate temperature measurements. Mounting flange is pre-drilled with a #6 hole to provide easy installation.