Primacoustic London Bass Trap Kit | Color: BlackThe 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" (61 x 122cm) Broadband 2" (5cm) thick absorption panels along with corner mount Impalers, sheetrock