This pressure switch is used. It came off of a working furnace and is in good condition. Part Number: HK06WC058. Low fire: break .18; make .33. High fire: break .27; make .42. Used on some Bryant furnaces with model number starting with: 312AAV, 312JAV, 315AAV, 315JAV. Used on some Carrier furnaces with model number starting with: 58CTA, 58CTS, 58CTX, 58CVA, 58CVX. I can verify a match with a complete model number of your furnace.