The MD-20 PAD measures 12"x17" and comes in a pack of 25, designed by Koch Filter Corp. This high-efficiency filter pad is ideal for various air filtration applications, ensuring optimal performance in HVAC systems. Constructed from durable materials, it effectively captures airborne particles, enhancing indoor air quality. The pad's dimensions make it suitable for a range of filter housings, and it complies with industry standards for filtration efficiency. Perfect for commercial and residential use, the MD-20 PAD is a reliable choice for maintaining clean air.