Armstrongs OPTIMA PlantBased 15/16in. Sq. LayIn Acoustic Fiberglass Ceiling Panels also meet rigorous commercial standards. They carry a ClassA fire rating and feature BIOBLOCK moldresistant performance, contributing to a healthier interior environment. The factoryapplied latex paint on a DuraBrite acoustical membrane delivers washability, soil and scratch resistance, and impact durability, offering dependable longterm value. Rvalue of 4.00 adds thermal benefits, while compatibility with TECHZONE systems enhances installation flexibility.