The SPT-5 PAD measures 11"x20" 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 allow for easy installation in standard filter frames, making it a versatile choice for both residential and commercial use. Compliant with industry standards, the SPT-5 PAD is a reliable solution for maintaining clean air environments.