3M 3811/40 (100FT) is a double sided tape designed for heavy-duty mounting, bonding, and joining applications. It features a red line on one side for permanent adhesion, and a blue line on the other for temporary application. The foam carrier of this tape provides cushioning, insulation, and noise and vibration dampening. It works well on wood, metal, plastic, foam, glass, and other surfaces, and is easy to use. It is also waterproof and weather resistant, making it suitable for both indoor and outdoor use.