I'd sort available boxes on the volume (or any other way, assuring that most favorable boxes are listed first. then box selection is done with one Array Formula*
*) ...confirmed by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. You will know the array is active when you see curly braces { } appear around your formula. If you do not CTRL+SHIFT+ENTER you will get an error or a clearly incorrect answer.
Variance (on volume?, on least fited dimension? ) can then be calculated, and the comment displayed with VLOOKUP
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