Fire-resistant shroud ("Fire Shroud") for a barrier surface-mountable electromagnetic device, including a synthetic vitreous fiber body having a cavity configured to the shape of a portion of the electromagnetic device. Barrier surface-mountable loudspeaker system, including a barrier surface-mountable loudspeaker having a back-can including a sound-producing element; and a synthetic vitreous fiber body having a cavity configured to the shape of a barrier surface-mountable loudspeaker back-can. Method of installing a barrier surface-mountable electromagnetic device in a barrier surface of an interior space.