<strong>SonoColumns</strong> are Auralex's newest solution for absorption of low-frequencies. Like our LENRD corner bass traps, the SonoColumns are an excellent way to tame low-frequency anomalies in your room, and offer some great decorative alternatives.</p><p>The 4' long SonoColumns are designed to be stacked on top of one another to create an 8' fluted column anywhere on the wall. Or, they can be placed in the corners where bass build-up is most often present. In combination with other Auralex Studiofoam products, SonoColumns provide an endless number of design alternatives, allowing you to create your own distinctive look while still offering great acoustics.</p><p>SonoCollars (Sold separately or as an accessory to SonoColumns) are designed to work with SonoColumns by acting as a column cap to provide the finishing touch to the column.</p><p>SonoCollars are useful in filling any gap between the top of an 8 foot column and the ceiling.</p><p><strong>4 Per Box</strong><br />NOTE: Sonocolumns are only available in Charcoal Gray</p>