Artsonic Diamond Acoustic Sound Absorbing Panel 20'' X 12'' X 0.4''The panel absorbs the sound generated by low to high frequencies, making it great for recording studios, apartments, and condominiums with shared walls. Designed for noise reduction but crafted with style. These Diamond Acoustic Panels will not only reduce the noise coming from your place, but they make great accent pieces for your space as well. Decorate your home or office with multiple panels. Simply apply 3M Double Sided Tape (not included) or a