Stack 'em up! The VersArray Ground Stack Kit surface mounts VersArray 112s on top of subwoofers. FeaturesBracket set, bolts to Versarray 218 subConnect up to three Versarray 112 speakersIncludes tie-down bracketsWeight Unpacked: 6.26 lb(2.839 kg)Weight Packed: 7.17 lb(3.254 kg)Width Packed: 12.25"(31.115 cm)Height Packed: 12.375"(31.4325 cm)Depth Packed: 4.75"(12.065 cm)