ATS Acoustics Corner Bass Traps are 13 inches deep at the center, allowing them to absorb low frequencies much better than 2-inch or 4-inch thick wall panels. This is the Full Frequency Range version of the ATS acoustics bass trap, designed to absorb low, mid and high frequencies very well. These bass traps feature a solid wood internal frame for a durable build that protects edges from dents and damage, a 6lb density mineral wool core for highly effective sound absorption, and are wrapped in ATS Acoustics exclusive line of Guilford of Maine Sona acoustical fabric for professional appearance and optimal sound pass-through. The variety of colors ensures that these bass traps can fit into any home design or room decor within your home, office, workplace, studio, and more. Installation is quick and easy with the included mounting hardware and template.