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The FB-C8 enclosure is a flexible, pre or post-construction square acoustic foam box. Designed for 8-inch in-ceiling speakers (see full compatibility list below), the FB-C8 provides a better enclosed environment for the speaker, thereby improving the sound quality while also reducing sound transfer into other rooms. Using additional framing, the FB-C8 can be mounted in-between joists or trusses during construction or for post-construction installation, simply fold the FB-C8, push through the speaker’s mounting hole, and it will expand inside the ceiling. Once the FB-C8 is in place, install the speaker which, along with gravity and insulation, will easily keep the FB-C8 in position.

Attenuation: Up to 9dB
 (Outside) 15" H x 15" W x 8.5" D (381mm H x 381mm W x 216mm D)
 (Cutout) 12" H x 12" W x 7" D (305mm H x 305mm W x 178mm D)
Weight: .90 (.41 kg)


(Includes one rear enclosure.
Does not include installation.)


The FB-C8 works with the following speaker models: VA-815, VA-815L, VM-815 and VM-815L.

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