Koch Filter Corp's SPT-10 PAD measures 13"x77" and is available in a pack of 25. This high-efficiency filter pad is engineered to capture a wide range of airborne contaminants, ensuring optimal air quality. Its design allows for easy installation in various HVAC systems, making it suitable for both residential and commercial applications. The durable construction ensures longevity, while the MERV rating confirms compliance with industry standards for air filtration. This product is an excellent choice for enhancing indoor air quality.