Auralex Studiofoam Royale Herringbone - Acoustic Absorption Panels (Purple / Box of 16)Herringbone design, to be installed in alternating pattern. Studiofoam Royale is the first in a product line Auralex Acoustics is developing under the WaveCave family. The panels are engineered using a patent pending design that combines Studiofoam and an air gap to develop a highly efficient absorber that performs nearly as effectively as fiberglass. The products are also designed to be used in various geometric patterns to craft a unique look and