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loudspeaker fire hoods

jbrameld

Maybe not exactly a wiring regs question, but does anyone know of a fire hood for an 8 inch ceiling loudspeaker that offers 120 minute fire resistance?  I can find 90 minute hoods, but this design (not ours I hasten to add) has put loudspeakers into a 120 minute fire ceiling and this is proving a bit challenging.

We can possibly change to wall loudspeakers in these areas but if we can find a 120 minute hood that would be the easiest solution.

Thanks,

Jason.

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    Building a 240mm high box through a 200mm square hole does sound challenging.

    But you can build it on the ground and cut a larger hole and then put it up screwed into battens in the ceiling. Thinking a cross-section would look like a top hat. Would need a bit of decorating around it.

    Also the layers of plasterboard would need to overlap at any joints, so stepped. 

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  • 0

    Building a 240mm high box through a 200mm square hole does sound challenging.

    But you can build it on the ground and cut a larger hole and then put it up screwed into battens in the ceiling. Thinking a cross-section would look like a top hat. Would need a bit of decorating around it.

    Also the layers of plasterboard would need to overlap at any joints, so stepped. 

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