A Green Glue Whisper™ Clip separates drywall from the building studs to dramatically reduce sound transmission by allowing one wall to vibrate independently from the other. Whisper Clips were designed for high STC and maximum low-frequency sound isolation in mind, so walls fortified with our clips will eliminate the bass sounds most commonly found with home entertainment and theater systems.

Green Glue Noiseproofing Clips testing proves they are superior in performance to competitive clips. When used in conjunction with Green Glue Damping Compound, you can prevent more than 95 percent of sound from passing through a conventional wall.

Whisper™ Clips should be employed in conjunction with sound barriers, vibration isolators, and other construction materials to build soundproof assemblies.

Approximate Coverage: 1 Whisper™ Clip for every 5 feet of wall or ceiling.

Recommended hat channel:

Depth: 7/8" Width Top: 1-1/4" Width Bottom: 2-1/2"
- For Walls: 25 gauge hemmed edges
- For Ceilings: 22 gauge

Green Glue Whisper™ Clip STC Rating for Whisper™ Clips on Only 1 Side of the wall
First Side of the Wall	Wall Cavity	Second Side of the Wall	STC
1 layer of 5/8" Drywall with Whisper™ Clips	Wood Studs with R19 Fiberglass Insulation	1 layer of 5/8" Drywall	56
2 layer of 5/8" Drywall with Whisper™ Clips		2 layer of 5/8" Drywall	61
2 layer of 5/8" Drywall with Whisper™ Clips		2 layer of 5/8" Drywall	63