The Titus TRM‑12X12 Rapid Mount Trim Ring is an aluminum mounting frame accessory designed to support the OMNI‑12X12‑8 Square Plaque Diffuser in drywall and plaster ceilings.  It enables installation of the diffuser (border type 3) into surface-mount openings (border type 1) and secures it with adjustable security clips, making it ideal for environments without T-bar grid ceilings.

When used under the OMNI‑12X12‑8 diffuser, the TRM frame allows easy removal of the trim ring and diffuser face for access to actuators, dampers, or plenum space.  This makes maintenance and retrofit work straightforward, while preserving the sleek, flush aesthetic of architectural ceilings.

For drywall or plaster ceiling installations where a standard OMNI unit is needed, adding the TRM‑12X12 ensures efficient mounting.  It maintains ceiling integrity and provides tool-free accessibility to concealed systems, all while matching the diffuser’s quality, appearance, and performance.