Image 1 of 1 Lennox 84W88 Defrost Control Board $0.00 The Lennox 84W88 is an OEM replacement Defrost Control Board Kit designed for Lennox, Armstrong, and Ducane heat pump units. Added! The Lennox 84W88 is an OEM replacement Defrost Control Board Kit designed for Lennox, Armstrong, and Ducane heat pump units.
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