Auralex RC8 Resilient Channel in 25 Gauge Metal; Box of 24- 8' Lengths Reduces sound transmission from room during construction Product is used to hang drywall instead of attaching to studs RC-8 is made from 25 Gauge Steel Installation information provided Decouples drywall layer from the supporting stud structure to reduce sound transmission through walls performance of RC-8 can be enhanced using dual layers of differing thicknesses of drywall with a layer of Auralex SheetBlok in between For best sound isolation, Auralex recommends incorporating the following products into your room construction in the options shown above Specially bent, sturdy metal device used to hang drywall, creating a 1/2" air pocket between layers Greatly improves the sound transmission characteristics of the wall or ceiling system