The ACE-Closed Cell Backer Rod is a 3/8″ thick foam product designed for insulation purposes. This 20ft long rod comes in a gray color and is packaged in a roll for easy handling and storage. Made in Canada, this backer rod is suitable for various insulation needs and is a reliable choice for sealing and insulating spaces in buildings and industrial settings. Its quality construction and brand reputation make it a trusted option for professionals and DIY enthusiasts alike.