The Donaldson ventilation air filter meets the stringent ISO 5011 standards, assuring you of its quality and performance. Crafted with precision, it boasts an actual width of 12.59 inches and a height of 0.78 inches. Its design adheres to industry standards, making it a reliable choice for various applications. With an actual depth of 13.38 inches, it ensures effective filtration and ventilation. Trust Donaldson for a dependable and efficient solution for your air filtration needs.