Harmony Integral drop down door seal provides acoustic, smoke and air sealing. The spring-loaded seal drops up to 15mm against the floor when the door is closed. It is self-levelling (ideal for uneven surfaces) and is easily adjustable. Tested to BS EN ISO 10140-2:2010 providing up to 32dB with standard door core, and up to 43dB with acoustic door core Smoke tested to BS EN 1634-3: Smoke Ambient (Sa) Available in 4 sizes, 735mm, 835mm, 935mm and 1135mm. The length can be trimmed by a maximum of 150mm. (See below for full instructions.)
