
Lennox 42W16 Extension kit
For field technicians and mechanical contractors, the Lennox 42W16 (LB-115012B) Vent Extension Kit is the industry-standard solution for bringing rooftop installations into compliance with local building codes. Specifically engineered for Lennox LG, LD, KG 092-360, and SG 240 series units, this kit addresses critical clearance issues where exhaust outlets are situated too close to fresh air intakes. By elevating the termination point, it prevents flue gas recirculation and mitigates the risk of ice formation on intake louvers during low-ambient operation. This OEM Lennox ventilation accessory is approved for installations requiring an extension of up to 3 feet (0.92m) above the unit top. The kit features heavy-duty components designed to withstand harsh rooftop environments, including a vent transition, a 4” x 4” x 3” B-vent tee, and all necessary bracket assemblies. Using a genuine Lennox 42W16 vent kit ensures a precise fit and maintains the structural integrity of the exhaust system without compromising blower performance or static pressure.
Key Benefits for Technicians:- Code Compliance: Facilitates meeting required separation distances between exhaust discharge and outdoor air intakes.
- System Reliability: Prevents moisture-laden exhaust from freezing on intake screens, ensuring consistent airflow.
- All-In-One Package: Includes vent transition, drain cap, B-vent tee, brackets, straps, and high-grade gaskets to reduce field fabrication time.
- High Compatibility: Direct fit for large-tonnage Lennox packaged rooftop units (RTUs) across LGH, LGM, and KG product lines.
- Structural Stability: Reinforced with split lockwashers and dedicated bracket assemblies for secure vertical mounting.
What field-provided materials are required for the Lennox 42W16?
Contractors must provide two lengths of 4-inch diameter B-vent pipe and one 4-inch vent cap to complete the installation as per factory specifications.
Can this kit be used for extensions exceeding 3 feet?
No, this specific high-performance vent extension is only approved for vertical extensions up to 3 feet above the unit surface to ensure proper drafting and mechanical safety.
Does this fit the Lennox SG 120 units?
While often utilized for SG 240 units, technicians should verify the specific HVAC ventilation kit part number for SG 120 models, as variations in transition offsets may apply.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $361.45
-65%$361.45
$126.51Lennox 42W16 Extension kit
For field technicians and mechanical contractors, the Lennox 42W16 (LB-115012B) Vent Extension Kit is the industry-standard solution for bringing rooftop installations into compliance with local building codes. Specifically engineered for Lennox LG, LD, KG 092-360, and SG 240 series units, this kit addresses critical clearance issues where exhaust outlets are situated too close to fresh air intakes. By elevating the termination point, it prevents flue gas recirculation and mitigates the risk of ice formation on intake louvers during low-ambient operation. This OEM Lennox ventilation accessory is approved for installations requiring an extension of up to 3 feet (0.92m) above the unit top. The kit features heavy-duty components designed to withstand harsh rooftop environments, including a vent transition, a 4” x 4” x 3” B-vent tee, and all necessary bracket assemblies. Using a genuine Lennox 42W16 vent kit ensures a precise fit and maintains the structural integrity of the exhaust system without compromising blower performance or static pressure.
Key Benefits for Technicians:- Code Compliance: Facilitates meeting required separation distances between exhaust discharge and outdoor air intakes.
- System Reliability: Prevents moisture-laden exhaust from freezing on intake screens, ensuring consistent airflow.
- All-In-One Package: Includes vent transition, drain cap, B-vent tee, brackets, straps, and high-grade gaskets to reduce field fabrication time.
- High Compatibility: Direct fit for large-tonnage Lennox packaged rooftop units (RTUs) across LGH, LGM, and KG product lines.
- Structural Stability: Reinforced with split lockwashers and dedicated bracket assemblies for secure vertical mounting.
What field-provided materials are required for the Lennox 42W16?
Contractors must provide two lengths of 4-inch diameter B-vent pipe and one 4-inch vent cap to complete the installation as per factory specifications.
Can this kit be used for extensions exceeding 3 feet?
No, this specific high-performance vent extension is only approved for vertical extensions up to 3 feet above the unit surface to ensure proper drafting and mechanical safety.
Does this fit the Lennox SG 120 units?
While often utilized for SG 240 units, technicians should verify the specific HVAC ventilation kit part number for SG 120 models, as variations in transition offsets may apply.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
For field technicians and mechanical contractors, the Lennox 42W16 (LB-115012B) Vent Extension Kit is the industry-standard solution for bringing rooftop installations into compliance with local building codes. Specifically engineered for Lennox LG, LD, KG 092-360, and SG 240 series units, this kit addresses critical clearance issues where exhaust outlets are situated too close to fresh air intakes. By elevating the termination point, it prevents flue gas recirculation and mitigates the risk of ice formation on intake louvers during low-ambient operation. This OEM Lennox ventilation accessory is approved for installations requiring an extension of up to 3 feet (0.92m) above the unit top. The kit features heavy-duty components designed to withstand harsh rooftop environments, including a vent transition, a 4” x 4” x 3” B-vent tee, and all necessary bracket assemblies. Using a genuine Lennox 42W16 vent kit ensures a precise fit and maintains the structural integrity of the exhaust system without compromising blower performance or static pressure.
Key Benefits for Technicians:- Code Compliance: Facilitates meeting required separation distances between exhaust discharge and outdoor air intakes.
- System Reliability: Prevents moisture-laden exhaust from freezing on intake screens, ensuring consistent airflow.
- All-In-One Package: Includes vent transition, drain cap, B-vent tee, brackets, straps, and high-grade gaskets to reduce field fabrication time.
- High Compatibility: Direct fit for large-tonnage Lennox packaged rooftop units (RTUs) across LGH, LGM, and KG product lines.
- Structural Stability: Reinforced with split lockwashers and dedicated bracket assemblies for secure vertical mounting.
What field-provided materials are required for the Lennox 42W16?
Contractors must provide two lengths of 4-inch diameter B-vent pipe and one 4-inch vent cap to complete the installation as per factory specifications.
Can this kit be used for extensions exceeding 3 feet?
No, this specific high-performance vent extension is only approved for vertical extensions up to 3 feet above the unit surface to ensure proper drafting and mechanical safety.
Does this fit the Lennox SG 120 units?
While often utilized for SG 240 units, technicians should verify the specific HVAC ventilation kit part number for SG 120 models, as variations in transition offsets may apply.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












