Dwyer 2000-15MM Magnehelic® Differential Pressure Gauge is a reliable and accurate gauge designed for air and non-combustible gases. It has an IP67 enclosure rating and a die cast aluminum housing with a gray coating for corrosion resistance. The gauge features a 4" diameter dial face, a temperature range of 20°F to 140°F, and an accuracy of ±2% throughout the range. It has a pressure limit of -20 in Hg to 15 psig and comes with standard accessories including pressure taps and adapters.