Manufacturer Name: Cleveland Controls Product Number: NS2-1049-05 OEM Part Number: NS2-1049-05 Product Description: 1.10"Wc Pressure Switch Weight:0.14lbs/63.5g The Cleveland Controls NS2-1049-05 1.10 Inch Wc Pressure Switch is a vital component in HVAC systems, designed to monitor and regulate air pressure within a range of 1.10 inches of water column. https://www.partshnc.com/ns2-1049-05-cleveland-controls-110-wc-pressure-switch