Lyra Concealed ceiling panels from Armstrong Ceiling Solutions combine the monolithic look of drywall with downward accessibility for projects with minimal plenum heights. Featuring an Articulation Class of 190 and a Noise Reduction Coefficient of 0.95, Lyra Concealed ceiling panels are available in standard 48- by 48-inch, 30- by 30-inch, 24- by 48-inch, 24- by 72-inch and 24- by 96-inch panel sizes. The fiberglass panels install on a new or existing Prelude 15/16-inch XL suspension system. The panels’ high light-reflective white finish provides a smooth, durable surface that is washable, scratch-resistant and soil-resistant. The panels have a 30-year guarantee against visible sag, mold, and mildew and are made with up to 71 percent recycled content.