Professional Acoustics Foam 12 Pack of (12x12x2) Inch Acoustical White Wedge Foam Panels for Sound Studio Home Theater Soundproofing Consists of 12 PCS (6 tiles/pair) of 12 x 12 x 2 (2-inch) Acoustical Wedge foam panels good for studios, recording studios, vocal booths, control rooms Class A Fire Retardant Very Good Quality High NRC !! Product Care: Occasional Vacuuming of Dust