Question about port area and box size

[Bass so loud it HZ]

I'm trying to do 4 18 inch resilient sound platinums in a cpillar flat wall .4 to 5 cubes per was told they like 12 to 16 inches per cube . I have about 28 cubes to work with .I'm trying to figure out if that would be enough to do it in . Idk how the port effects the overall size ...TIA

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