DESIGNFlex for Formations Acoustical Clouds allow designers to incorporate acoustical control with desired aesthetics into their ceiling design. Available in nine standard patterns and 18 easy-to-order installation kits that create unique geometric cloud visuals, it is available in Armstrong’s popular Calla, Lyra PB, Ultima and Optima panels in a variety of geometric shapes and sizes. Panels absorb sound from both the front and the back to help reduce noise.