1 SA-15 EZ (4cf 35 Hz)DIY BLUEPRINT FOR A SA-15 SUBWOOFERVOLUME: 4cf netTUNING: 35 HzPORT AREA: 60in^2(15in per cube)DIMENSIONSWidth: 29-1/8inHeight: 18-1/4inDepth: 21-1/2in$15.00PriceAdd to CartBuy Now