We have a line of products to eliminate air gaps, all of which are very easy to install and are fastened to the door or the jamb with small screws. Our Adjustable door seals can be ordered in a kit to seal up the gaps around the entire door, or each piece can be ordered individually. There are two different options to choose from and thickness relates directly to performance – the thicker the door seal, the more neoprene rubber that makes the seal. The correct thickness for any situation is a personal preference, and should be chosen based on the importance of confidentiality, as well as the severity of the problem you are experiencing.