{HEAD ~ The method} 13 including providing a local enclosure in said space and containing said filter, and providing {TAIL ~ an opening} through said liner to communicate with the filter in said enclosure 
including providing
{ HEAD ~ The method } 13 including providing a local enclosure in said space and containing said filter , and providing { TAIL ~ an opening } through said liner to communicate with the filter in said enclosure
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH