Lennox 45M66 Collar Assembly
The Lennox 45M66 Collar Assembly is an essential OEM replacement part designed specifically for high-efficiency HVAC cabinet and ductwork transitions. This Right-Hand Collar Assembly (part number LB-96380A) provides the structural interface required to maintain rigid connections at the unit discharge or return plenum, ensuring no static pressure loss at critical junction points. Manufactured to original Lennox HVAC equipment tolerances, the 45M66 eliminates the fitment issues common with universal aftermarket sleeves. By securing a flush, vibration-resistant seal on the right side of the air handler or furnace, this assembly optimizes airflow system performance and prevents air bypass. For field technicians, the 45M66 Lennox collar offers a direct-drop-in solution that maintains the physical integrity of the blower housing or heat exchanger cabinet. Relying on genuine Lennox parts ensures that system static sensors and downstream filtration components receive the laminar flow intended by the original equipment design.
Key Benefits- Direct OEM Fit: Specifically engineered as a right-side collar assembly to match the bolt patterns of Lennox-brand air handlers and furnaces.
- Structural Integrity: Built with heavy-duty materials to withstand thermal expansion and high-velocity duct pressures without warping.
- Optimized HVAC Efficiency: Creates a tight seal that prevents ductwork air leakage, directly contributing to lower operational costs and better temperature control.
- Contractor-Ready Installation: Precision-stamped mounting holes allow for rapid field replacement during system repairs or ductwork modifications.
Is the Lennox 45M66 compatible with left-hand discharge units?
No, the 45M66 is a dedicated right-hand assembly. For left-hand configurations, a different part number must be specified to ensure proper orientation and flange alignment.
What symptom indicates a failing collar assembly?
Technicians often find HVAC air bypass or whistling at the unit-to-duct transition. Visible gaps, rusted flanges, or excessive vibration at the plenum typically necessitate a replacement of the 45M66 collar.
Can I use this assembly with non-Lennox ductwork?
Yes, while it is an OEM Lennox part, the outward-facing flange is compatible with standard HVAC duct fittings, provided the unit-side matches the 45M66 specifications.
This item is not eligible for free shipping.
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: $120.70
-65%$120.70
$42.24Lennox 45M66 Collar Assembly
The Lennox 45M66 Collar Assembly is an essential OEM replacement part designed specifically for high-efficiency HVAC cabinet and ductwork transitions. This Right-Hand Collar Assembly (part number LB-96380A) provides the structural interface required to maintain rigid connections at the unit discharge or return plenum, ensuring no static pressure loss at critical junction points. Manufactured to original Lennox HVAC equipment tolerances, the 45M66 eliminates the fitment issues common with universal aftermarket sleeves. By securing a flush, vibration-resistant seal on the right side of the air handler or furnace, this assembly optimizes airflow system performance and prevents air bypass. For field technicians, the 45M66 Lennox collar offers a direct-drop-in solution that maintains the physical integrity of the blower housing or heat exchanger cabinet. Relying on genuine Lennox parts ensures that system static sensors and downstream filtration components receive the laminar flow intended by the original equipment design.
Key Benefits- Direct OEM Fit: Specifically engineered as a right-side collar assembly to match the bolt patterns of Lennox-brand air handlers and furnaces.
- Structural Integrity: Built with heavy-duty materials to withstand thermal expansion and high-velocity duct pressures without warping.
- Optimized HVAC Efficiency: Creates a tight seal that prevents ductwork air leakage, directly contributing to lower operational costs and better temperature control.
- Contractor-Ready Installation: Precision-stamped mounting holes allow for rapid field replacement during system repairs or ductwork modifications.
Is the Lennox 45M66 compatible with left-hand discharge units?
No, the 45M66 is a dedicated right-hand assembly. For left-hand configurations, a different part number must be specified to ensure proper orientation and flange alignment.
What symptom indicates a failing collar assembly?
Technicians often find HVAC air bypass or whistling at the unit-to-duct transition. Visible gaps, rusted flanges, or excessive vibration at the plenum typically necessitate a replacement of the 45M66 collar.
Can I use this assembly with non-Lennox ductwork?
Yes, while it is an OEM Lennox part, the outward-facing flange is compatible with standard HVAC duct fittings, provided the unit-side matches the 45M66 specifications.
This item is not eligible for free shipping.
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
The Lennox 45M66 Collar Assembly is an essential OEM replacement part designed specifically for high-efficiency HVAC cabinet and ductwork transitions. This Right-Hand Collar Assembly (part number LB-96380A) provides the structural interface required to maintain rigid connections at the unit discharge or return plenum, ensuring no static pressure loss at critical junction points. Manufactured to original Lennox HVAC equipment tolerances, the 45M66 eliminates the fitment issues common with universal aftermarket sleeves. By securing a flush, vibration-resistant seal on the right side of the air handler or furnace, this assembly optimizes airflow system performance and prevents air bypass. For field technicians, the 45M66 Lennox collar offers a direct-drop-in solution that maintains the physical integrity of the blower housing or heat exchanger cabinet. Relying on genuine Lennox parts ensures that system static sensors and downstream filtration components receive the laminar flow intended by the original equipment design.
Key Benefits- Direct OEM Fit: Specifically engineered as a right-side collar assembly to match the bolt patterns of Lennox-brand air handlers and furnaces.
- Structural Integrity: Built with heavy-duty materials to withstand thermal expansion and high-velocity duct pressures without warping.
- Optimized HVAC Efficiency: Creates a tight seal that prevents ductwork air leakage, directly contributing to lower operational costs and better temperature control.
- Contractor-Ready Installation: Precision-stamped mounting holes allow for rapid field replacement during system repairs or ductwork modifications.
Is the Lennox 45M66 compatible with left-hand discharge units?
No, the 45M66 is a dedicated right-hand assembly. For left-hand configurations, a different part number must be specified to ensure proper orientation and flange alignment.
What symptom indicates a failing collar assembly?
Technicians often find HVAC air bypass or whistling at the unit-to-duct transition. Visible gaps, rusted flanges, or excessive vibration at the plenum typically necessitate a replacement of the 45M66 collar.
Can I use this assembly with non-Lennox ductwork?
Yes, while it is an OEM Lennox part, the outward-facing flange is compatible with standard HVAC duct fittings, provided the unit-side matches the 45M66 specifications.
This item is not eligible for free shipping.
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.
