Lennox 49K67 Gasket 320735-701 the T-4000-3139 is a blank

the T-4000-3139 is a blank "no-window" model designed for concealed applications where temperature readings and setpoint adjustments are managed by authorized technicians only

this Goodman furnace part provides a precise fit

effectively reducing operational noise and vibration

Precise Flow Control: Engineered Orifice Size 1 geometry ensures accurate pressure drop and mass flow for specific BTU/hr ratings

this part ensures proper resistive heating within Intertherm

Lennox 49K67 Gasket 320735-701 the T-4000-3139 is a blankWhen you're dealing with a mid efficiency or high efficiency furnace, a leaking Lennox 49K67 is often the silent culprit behind pressure switch trips and secondary heat exchanger issues. This OEM collector box gasket is engineered specifically for Lennox HVAC systems, including the 90UGFA, G26Q, and G32 series. As technicians, we know that reusing a compressed or degraded gasket during a PM or heat exchanger inspection is asking for a callback. This