Rheem A/C-where do I find the cut-out specs for the air handler?

we are in the process of building the interior walls, and the a/c cabinet. need these specs in order to deck out the a/c cabinet. we are looking at a 4 ton,14seer unit.

Rheem A/C-where do I find the cut-out specs for the air handler?
Good luck. Rheem has the worst online support of any manufacturer I know. You might consider Carrier or Day %26amp; Night.

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