The Jones Stephens Duct Liner Roll measures 56.25 inches wide by 100 feet long, with a thickness of 1/2 inch, providing a total coverage of 469 square feet. This high-quality duct liner is designed for effective thermal insulation and sound attenuation in HVAC systems. Made from durable materials, it meets industry standards for performance and safety. Ideal for both residential and commercial applications, this duct liner is easy to install and compatible with various duct systems. Enhance your HVAC efficiency with this reliable product.