The SPT 550 PAD measures 25"x25" and is designed for high-efficiency air filtration. This product from Koch Filter Corp features a robust construction that ensures effective capture of dust and particulates. Each carton contains 25 pads, making it a cost-effective choice for regular maintenance in various applications. The SPT 550 PAD is suitable for use in HVAC systems, clean rooms, and other environments requiring superior air quality. It meets industry standards for performance and efficiency, ensuring compliance with environmental regulations.