I'm not sure exactly what it looks like since I haven't removed mine. It's the main air unit where all the HVAC air passes through. It would be the central unit from where all the air ducts originate.
I don't know if that description made a lot of sense; it wasn't the most concise thing I've ever written.
Regards,
David
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2000 Honda Accord V6 137k miles
1972 300SEL 4.5 98k miles
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