Lennox 43J60 Flue Box HVAC Installation Part 9K+15K+15K+15K 6-inch diameter for standard duct

6-inch diameter for standard duct systems

ensures perfect compatibility

Features class B insulation coils for enhanced durability

Compatible with 1600 series Taco pumps

Lennox 43J60 Flue Box HVAC Installation Part 9K+15K+15K+15K 6-inch diameter for standard ductProduct Description The Lennox 43J60 is a durable flue box designed for professional HVAC installations and repairs. This essential component is crucial for effective exhaust venting in heating systems. Enhances heating system efficiency by effectively directing exhaust gases outside. Robust construction ensures a long service life and reliable performance. Compatible with various Lennox HVAC models, making it a versatile choice for replacements or