Niles RWE7C Rear Wave Enclosure for 7-in DSOverview Specifications The Niles RWE7C Rear Wave Enclosure csn be used with all Niles 7 Inch DS Series Speakers. The enclosure provides superior quality and predictable sound, while reducing sound transfer into adjacent rooms and spaces. Please Note: If you are going to use the optional Niles Rear Wave Enclosure, you will need an additional 2" of depth and 10" of clearance to one side of the loudspeaker opening. Product Features Works with Niles 7