About: http://webisa.webdatacommons.org/6196398

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Indoor within ducts, plenums and other spaces used for environmental air for Intercom, Security, Sound, Audio, Background music, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	hdtvsupply.com