i think like 45" total...but i'm just gonna go with 35" wide by 13" tall by 18" deep, 3" port width, 11.5" port height, 29.5" port total length.
If i did it right, should be 3.079 ft^3, tuned at 29.63Hz, using the RE Audio Calculator, because i trust it, but anyone know where to put the sub...