DEC RING, 2,44” ID, CMS ADJ OUTER CLMN

The Chief CMA643 is a decorative finishing trim ring designed for the outer CMS adjustable extension column pipe used in suspended ceiling projector mount installations. It conceals the opening where the column passes through the ceiling tile, giving the installation a clean, professional appearance. The hinged design makes it suitable for both new installations and retrofit projects without requiring removal of the column. Intended for AV integrators and installers who demand a polished finish in corporate, educational, and commercial projection environments, the CMA643 is a simple but impactful detail that elevates the overall look of the completed mount system.

Hinged Design for Easy Retrofit

The CMA643 opens on a hinge, meaning it can be fitted around an already-installed CMS adjustable extension column without any disassembly. In practice, this saves considerable time on retrofit projects — the ring simply snaps around the pipe and closes flush against the ceiling tile. This is particularly valuable in live environments such as classrooms, boardrooms or auditoriums where minimising disruption to ongoing activities matters. The hinged mechanism also ensures a secure, rattle-free fit once closed.

Clean, Professional Ceiling Finish

When a CMS adjustable column passes through a suspended ceiling tile, it leaves an untidy gap or rough cut edge that is clearly visible from below. The CMA643 covers this gap with a smooth, silver-finished trim ring, bringing the installation up to the standard expected in corporate and educational environments. The neat escutcheon detail signals professional workmanship and reduces callbacks or complaints about the visual quality of the installation. Inside diameter is 6,2 cm, sized to fit the outer CMS adjustable column pipe precisely.

Snap on. Close flush. Installation complete.

10-year limited warranty on non-electrical products · Chief by Legrand AV