The SPT-10 PAD measures 17"x21" 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 standard filter frames, and it complies with industry standards for filtration efficiency. Perfect for commercial and residential use, the SPT-10 PAD is a reliable choice for maintaining clean air.