4 SA-12 EZ (6cf 35Hz)DIY BLUEPRINT FOR 4 SA-12 12in SUBWOOFERSVOLUME: 6cf netTUNING: 35HzPORT AREA: 84in^2(14in per cube)DIMENSIONSWidth: 48inHeight: 14-1/4inDepth: 25-3/8in$15.00PriceAdd to CartBuy Now