Our Acoustical head and jamb seals are secured directly to the door stop. This acoustical seal features our unique compress-o-matic design with a sound-absorbing neoprene rubber gasket that compresses to form a tight seal as the door is closed. The door jamb seals include adjusting screws for field correction of irregular clearances that might otherwise compromise the sound performance. These acoustical door jambs are listed for use with both wood and metal doors and they are available in five different models and four different finishes depending on how much sound reduction you may require.