About: http://webisa.webdatacommons.org/129154448

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	It is necessary to keep the pleats of the filter separated or spaced apart in a permanent and secure manner for however long the filter may be used which may be accomplished with various types of spacers including adhesives.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es