Resilient channel is a thin, flexible metal channel that is screwed to the studs. Drywall is then screwed to the channel, and the flexibility of the channel creates a decoupled wall. Giving you an efficient low-cost method of reducing sound transmission in steel or wooden framed partitions. The Resilient Channel decouples the drywall from the structure, preventing sound from traveling through. Length of each channel measures 8.0' (96"). sold in boxes of 32. Important Note: This product is NOT to be used with Resilient Sound Clips, which require Hat Channels for installation.