I got this box for 2 12's at my local shop so i have no idea what it is tuned to or cuft but im using this as a reference box so when i build my next ported box ill know my old box sounded and what it was tuned to so ill know whether to tune my next box higher or lower(most likely lower). My BOX is - 45 1/8" W - 14 1/4" D - 14 1/8" H - My PORT is 12 1/2" H - 3" W - 11" D