Steve and Leif U-Profile 15X8Mm Door Seals 2.5 Meters is Sealing the gap between door and frame for an exceptional acoustic and smoke containment. The seal will fill up air gaps effectively at the window/ door frame to maximize sound, light, smoke and dust entering from the outside. Self-adhesive. Made of cellular EPDM (ethylene-propylene rubber), can be cut into any desired size to fit door/ window?gap. Not suitable for sliding windows and doors. See more at http://stevenleif.com/cat/epdm-weather-strips/ -Solutions for Smart Living