Auralex RC8 Resilient Channel in 25 Gauge Metal; Box of 24- 8' Lengths<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Specially bent， sturdy metal device used to hang drywall (instead of attaching the drywall to the studs or joists)， creating a 1/2" air pocket between layers </span></li><li><span class="a-list-item"> Specially bent， sturdy metal device used to hang drywall， creating a 1/2" air pocket between layers </span></li><li><span class="a-list-item"> Greatly improves the sound transmission characteristics of the wall or ceiling system </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41362cE0a4L.jpg" noproxy>