The SPT-10 PAD 39"x39" by Koch Filter Corp is a robust filtration pad designed for large-scale air filtration needs. With dimensions of 39 inches by 39 inches, this pad is perfect for extensive HVAC systems and comes in a carton of 8. Engineered with high-quality materials, the SPT-10 effectively captures dust, pollen, and other airborne contaminants, ensuring cleaner air in your environment. This pad complies with industry standards, providing durability and reliability. Ideal for commercial applications, it seamlessly integrates into various air handling systems, enhancing overall air quality.