Introducing the Silent Knight STS-2.5 Sampling Tube, expertly designed for optimal performance in 2.5' ducts. This high-quality sampling tube is perfect for ensuring accurate air sampling in various duct sizes, accommodating widths from 0.5 to 2.5 feet. Crafted by Silent Knight, a trusted name in safety solutions, this product guarantees reliability and efficiency. Enhance your air quality monitoring with this essential tool that seamlessly fits into your existing systems. Don't miss out on the opportunity to improve your ductwork's performance—order the Silent Knight STS-2.5 Sampling Tube today and experience the difference!