VB-FD
Fiberglass Damper

What is VB-FD?
VB-FD is a thin, composite material engineered to create pockets of differing density between the various layers of fiberglass mat. VB-FD is paper thin and consists of two layers of paper that sandwich a core layer of thin aluminum.

How does VB-FD work?
For example, a fiberglass speaker enclosure may be made of several, thick layers of fiberglass mat. Although the walls of the enclosure may be thick, the enclosure will still "ring" excessively. VB-FD is designed to be cut into strips and placed in between the various layers of fiberglass mat with some separation (1" - 2") between the strips. These pockets of differing density positioned at various points around the construction will effectively reduce the resonant frequency of the enclosure and prevent sound energy from being converted into mechanical energy.

The outer paper layers of VB-FD will soak up the resin liquid and the aluminum layer will not. This aluminum layer is what creates the "pocket" that contributes to a lower resonant frequency.

Does VB-FD require any special tools to install?
No special tools are required to install this product. It only needs to be cut into strips and inserted as the fiberglass construction progressess.

PART: VB-FD
Dimensions: 4' x 5'
Coverage: 20 ft.sq.