About: http://webisa.webdatacommons.org/452770008

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	The box-like structure has an open wall which is affixed to the to a ceiling air vent with an attachment mechanism such as Velcro, clips, screws or other attachment means.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com