ACH - Acoustic Ceiling Hangers
Acoustic Building Isolation Products Designed specifically for applications where audible noise attenuation is of most concern, the ACH offers a low cost alternative to larger more traditional spring and rubber hangers. Primarily used to effectively decouple mass acoustic ceilings from the supporting building structure - thus preventing noise breakout or break-in. The ACH may also be used to reduce noise transmission from air conditioning equipment suspended in the ceiling void. See more at http://www.christiegrey.com/ach.html