sound door

sound-rated door

A door especially constructed to provide greater sound attenuation than that provided by a conventional door; usually carries a rating in terms of its sound transmission class.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Pewaukee, WI, February 21, 2016 --( The company's sound doors can be customized for the client's working space.
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Budden, who was in the middle of helping the Bath-born trainer write his autobiography at the time of his death, added: "Like Peter O'Sullevan, he had a very distinctive voice, and you could hear that sing-song sound doors away.