This is a BRAND NEW Heil/Tempstar/Inner City Products (ICP)/Comfort Maker Gas Furnace Air Pressure Switch. The Part # is 1445-591 and 1445591 (Honeywell/Tridelta Model # is FS6350-514). Switch has 3 wiring terminals and 2 hose ports and is rated at .90" w/c. It works on many Heil/Tempstar/ICP/Comfort Maker gas furnaces. Thanks for looking and good luck!
Used in ICP/Heil/Tempstar Units with model #s: