Ceiling speakers for recessed installations are available in a variety of formats.
The ES Series in-ceiling speaker system:
Specifically, the ES is a containerized speaker, which is easy to install. You can choose a 4 inch dual cone driver or 6 1/2 inch coaxial driver. Moreover, the speaker assembly includes a transformer, backbox, grille, support rails, C-ring, template, and more. It is very easy to install as it features a backbox with mounting dogs.
The RPAK in-ceiling speaker system:
This speaker system features an 8 inch 15 watt driver. The system includes 2 sets of speakers with transformers, grilles, backboxes, and tile-bridges. It also ships ready to install. Choose this speaker for general purpose paging and distributed music.
Choose the driver/grille assembly that fits your particular application. You may find a standard assembly fits your needs, or you may require an assembly that is UL Listed for General Signaling or UL Listed for Life Safety. Note that driver/grille assemblies with UL Listings maintain the listing only when installed with the specified backbox. Order the backbox separately.