The Primacoustic London Bass Traps are designed to help control excessive low frequency build-up that cause room modes in studios and listening rooms. Acoustic energy naturally migrates to corners using the walls and ceiling as waveguides. This makes corner-mounting the bass trap the preferred location. The London Bass Trap kit consists of two 24"x48"(61x122cm) Broadband 2" (5cm) thick absorption panels along with corner-mount Impalers, sheetrock anchors and screws. Each panel is constructed from high-density 6lb per cubic foot (96 kg/m³) glass wool with resin hardened edges and fully encapsulated with micromesh.