providing long-term reliability for commercial and industrial hydronic systems

though factory-assembled bi-flow versions are typically preferred for new installs

For contractors servicing mobile home furnaces or residential air handlers

Always verify the L180-40 stamping on the old part before installing

Whether you are performing a commercial HVAC repair or a preventative system upgrade

Lennox 64J11 Collector Box/Trap Refrigerant providing long-term reliability for commercialThe Lennox 64J11 Collector Box Trap, also identified by manufacturer part number LB 66579B, is a critical OEM replacement part designed for high efficiency condensing gas furnaces. This cold end header box is specifically engineered to manage secondary heat exchanger effluent by effectively trapping and directing acidic condensate into the drain trap assembly. Built to withstand the corrosive environment of flue gas byproducts, the Lennox 64J11