The Frontline Green Pad 12+12+1 by AAF International is a high-efficiency air filter designed for optimal performance in HVAC systems. This filter features a dual-layer construction that enhances filtration efficiency while maintaining low pressure drop. Measuring 12 inches by 12 inches with a thickness of 1 inch, it is compatible with various air handling units. The filter is constructed from eco-friendly materials, ensuring compliance with environmental standards. Ideal for commercial and industrial applications, it effectively captures airborne particles, improving indoor air quality.