The SPT-10 PAD 11"x47" by Koch Filter Corp is an advanced air filter pad designed for superior filtration in HVAC systems. With dimensions of 11 inches by 47 inches, this pad fits standard filter frames, ensuring easy installation. Its high-performance design captures a wide range of airborne particles, significantly improving indoor air quality. Made from durable materials, this pad is suitable for both commercial and residential applications. Each carton contains 8 pads, providing an economical solution for maintaining clean air in various environments.