TECTUM^® Lay-In ceiling panels from Armstrong Ceiling and Wall Solutions provide durable, sustainable, acoustical options for a wide variety of applications. TECTUM Lay-in now has UL Certified acoustics with acoustical testing and reporting that align with industry-wide best practices, and can be painted up to six times without impacting acoustic or fire performance. White, Natural, 1" TECTUM panels are Living Product Imperative Certified by the International Living Future Institute.