ATS Acoustics acoustic panels with Sona fabric are Fire Rated Class 1 or Class A per ASTM E84. High-performance Noise Reduction Coefficient (NRC) of 1.0 out of 1 for superior sound absorption. They are built using a solid wood internal frame that protects edges from dents and damages, and a noise-absorbing mineral wool core that is far more effective than foam. Wrapped in fire resistant Sona fabric made for ATS by Guilford of Maine. These panels reduce reflections from a room's hard surfaces to keep sound clear and free from excessive reverb and echoes. The wide color variety can complement any room or wall decor or design with the rich colored acoustically optimized fabric. Installation is easy with the included mounting template and installation hardware that can mount to most common construction materials such as drywall, concrete, and wood walls. An overall excellent choice for projects where quality and performance matter.