About: http://webisa.webdatacommons.org/265175265

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	Internal linings can be very effective in fittings such as elbows, which can have 2 to 8 times more attenuation than an unlined elbow of the same size.
http://www.w3.org/ns/prov#wasQuotedFrom	wbdg.org