At 13" inches deep, our corner bass traps offer increased absorption at ultra low frequencies. The panels are made out of Roxul SAFE n SOUND Acoustical Fire Batts, Mineral Wool (Fireproof and Soundproof). They have high quality acoustic fabric wrapped around the frame. These would be a perfect, cost effective, acoustic solution for a sonically untamed home studio, business, or even a home theater. You can count on this Mixmastered Acoustics' newest bass absorber to trap low end.