The Pre-installation bracket is for when the speaker is being pre-installed into a Plasterboard ceiling, the optional pre-installation brackets can be installed before the plaster is skimmed. The pre-installation bracket provides a mounting solution to which wiring can be tied behind the plaster. This can also act as a cut out template when many cut outs are to be made in an installation, and it secures the ceiling speaker to the building structure. The Plaster-ring bracket provides an edge guide for a seamless cut out.

Sold in packs of 10.