Koch Filter Corp presents the SPT-10 PAD, sized 21"x25" and available in a carton of 25. This filter pad is specifically designed for high-efficiency air filtration, making it suitable for a variety of HVAC systems. Its robust construction ensures longevity and effective particle capture, improving air quality in both commercial and residential settings. The dimensions are optimized for easy installation, and the product adheres to industry standards for filtration performance, ensuring reliable operation in demanding environments.