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Choose Options Compare Quick view IS20157-3403 - OEM Lennox Armstrong Ducane Furnace Air Pressure Switch -0.22" As low as $80.99 This is a brand new OEM Lennox Armstrong Ducane upgraded Furnace Air Pressure Switch -0.22". It replaces the part numbers listed below.An air switch is safety designed to ensure that your inducer... As low as $80.99 Choose Options Compare Quick view
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Choose Options Compare Quick view IS20100-3074 - OEM Lennox Ducane Furnace Pressure Switch Replaces Honeywell Resideo As low as $95.99 This is a brand new OEM Lennox Ducane upgraded Furnace Pressure Switch. It is a direct replacement for Honeywell Resideo. It replaces the part numbers listed below.An air switch is safety designed to... As low as $95.99 Choose Options Compare Quick view
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