Lennox 71L45 Gasket

Hi, I would need to know the dimesions of Collector box gasket 71L45 .Does the gasket work Lennox G40UH -36B -009-11?

Regarding the model number provided, G40UH-36B-009-11, it seems there might be an error. Assuming the correct model is G40UH-36B-090, the corresponding part number is 81L95. Unfortunately, this part is currently out of stock, and we do not have a lead time available yet. We kindly suggest revisiting your model numbers for accuracy. If you're still interested, please check back with us in a month. Thank you for your understanding.

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