The SPT-5 PAD 11"x12" from Koch Filter Corp is designed for efficient air filtration in various applications. This pad features a high-quality construction that ensures optimal performance and durability. Measuring 11 inches by 12 inches, it fits standard filter frames and is ideal for HVAC systems. Each carton contains 25 pads, making it a cost-effective solution for maintaining clean air. The SPT-5 series is known for its excellent dust-holding capacity and low resistance to airflow, ensuring that your systems operate efficiently. Compatible with various air handling units, this filter pad meets industry standards for air quality and performance.