Lennox 17F45 Collector Box R-22 While the A421ABC-04 serves as

While the A421ABC-04 serves as the direct replacement for the A419ABC-3

while the NEMA 4X enclosure offers superior protection against corrosion and environmental contaminants

and inspect the silicone tubing for cracks or moisture before testing the switch for continuity

Durable Protection: High-quality white plastic housing shields internal bimetal elements from mechanical damage and contaminants

industrial burners

Lennox 17F45 Collector Box R-22 While the A421ABC-04 serves asThe Lennox 17F45 Collector Box (also identified as the 619598 43 Cold End Header Box Kit) is a critical OEM component designed specifically for the EL296 series furnace and other high efficiency Lennox condensing units. As a seasoned technician, you know that a compromised collector box often leads to persistent condensate leaks or pressure switch trips. This collector box replacement kit is engineered with precise tolerances to ensure a gastight seal