Fits Lennox Armstrong Ducane
This is a BRAND NEW OEM Armstrong/Lennox/Ducane Furnace Air Pressure Switch. The Armstrong/Lennox part # is 65W49 (also part # R100684-09 & 100684-09). Switch is rated at -0.60" w/c and has 2 wiring terminals with one hose port. Function:An air switch is...