K.N. Crowder (KNC) CT-54 Automatic Door Bottom

Ratings – Fire rated
Extruded aluminum and neoprene is activated automatically when plunger depresses against door stop or jamb sealing out draft, sound and light. Fits into the recess of a standard hollow metal door. Available in stock sizes of 24″, 30″, 42″ or 48″ which can be shortened up to 6″ on the job (24″ can be shortened 3″ only). Maximum drop 1/2″.1/4″ “shim” to be used where required. Allow 3/16″ minimum operating clearances. Extruded aluminum & neoprene can be easily adjusted while on the door. Doors cut too short are no longer a problem.