The Duo Pak 40, a 2-ply filter measuring 20x20x20, is offered by Koch Filter Corp in packs of 5. This filter is designed for high-efficiency air filtration, effectively capturing dust and other airborne particles. Constructed from durable materials, it meets industry standards for performance and reliability. The 2-ply design enhances filtration capacity while maintaining optimal airflow, making it suitable for various HVAC applications. Easy to install, the Duo Pak 40 is an excellent choice for maintaining air quality in both residential and commercial environments.
