1 SA-6.5 EZ (0.33cf 38Hz)DIY BLUEPRINT FOR A SA-6.5 SUBWOOFERVOLUME: 0.33cf netTUNING: 38HzPORT AREA: 4.61in^2(13.97in per cube)DIMENSIONSWidth: 18-11/16inHeight: 8-7/8inDepth: 9-3/16in$15.00PriceAdd to CartBuy Now