The eggcrate is an extremely versatile product with uses in signage, pop displays, hvac ventilation, awning and many other applications. The open cell eggcrate greatly improves ventilation due to its 85% free face area, thus improving air flow. These louvers will not interfere with ceiling sprinkler systems and are injection molded in a single piece for added strength. They are designed with ship-lap fit for a uniform appearance when panels are joined. Made of pure white non-yellowing acrylic.