The HOFFMAN part 525H19 is a high-quality Filter Grille Panel designed for optimal airflow and filtration. Measuring 5.25 inches by 19 inches with a thickness of 1.37 inches, this panel is constructed from durable aluminum in a sleek mill finish. Perfect for various industrial and commercial applications, this grille panel provides efficient air circulation while keeping dust and debris out. Trust in the performance and durability of HOFFMAN products for all your filtration needs.