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 Low Frequency Range version of the bass trap uses a front surface membrane to increase bass absorption (50-250Hz) while decreasing mid and high-frequency absorption. This allows you to more effectively control bass in the room without reducing the overall reverb in the room more than desired. 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 100% jute 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.