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Armstrong Fluid Technology 570200 380 Pump Accessory 322838 752 Utilizing this genuine Lochinvar venturi Utilizing this genuine Lochinvar venturi kit prevents common ignition failures and ensures the modulating burner responds accurately to the smart touch electronic control signals The White Rodgers 21D83M 843 is a specialized SureLight replacement kit engineered to replace the Lennox LB 109531A and 50A62 820 integrated furnace controls
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