The SPT-10 PAD measures 20"x21" and comes in a pack of 25, designed by Koch Filter Corp. This high-efficiency pad is ideal for air filtration applications, ensuring optimal performance in various environments. Constructed from durable materials, it effectively captures airborne particles, enhancing air quality. The pad's dimensions make it suitable for a range of HVAC systems, providing a reliable solution for both residential and commercial use. Its compatibility with standard filter frames ensures easy installation and maintenance.