Chief CMS0911, 274-335 cm, Adjustable — Heavy-duty adjustable ceiling extension column
The Chief CMS0911 is a heavy-duty adjustable extension column designed for ceiling-mounted projectors and flat panel displays in commercial AV environments. Part of Chief's proven Speed-Connect CMS series, it spans from 274 to 335 cm and is built from aluminium for outstanding strength-to-weight performance. Compatible with any 1.5" NPT ceiling plate or accessory, it suits auditoriums, large conference rooms, lecture theatres and exhibition spaces where precise drop height is critical. Its tool-friendly notched adjustment system and integrated cable management channel make it a practical choice for integrators who need to deliver clean, professional installations quickly and reliably.
Tool-Free Length Adjustment On-Site
The CMS0911 uses Chief's patented notched-column design, allowing the drop length to be changed in approximately 2,5 cm increments across the full 274–335 cm range without dismantling the column from the ceiling or the projector. In practice this means an integrator can make a fine height correction during commissioning — or after furniture is rearranged — in minutes rather than hours. For end users in flexible venues such as lecture theatres or multi-purpose halls where seating layouts change, it removes the risk of a fixed-length column leaving the projected image at the wrong height permanently.
Universal 1.5" NPT Interface
Both ends of the CMS0911 are threaded to the 1.5" NPT standard, which is the de-facto interface across the entire Chief projector mount ecosystem — as well as many third-party ceiling plates and accessories. This means the column is not a proprietary dead-end; it can be paired with any NPT-compatible Chief ceiling plate above and any NPT-compatible projector mount below. For multi-brand or phased installations, this interoperability removes the need to replace the column if the projector or mounting bracket is upgraded later.
226,8 kg Load Capacity for Large-Venue Projectors
With a maximum rated load of 226,8 kg, the CMS0911 covers virtually every large-venue and laser projector currently on the market — including heavy cinema-class units that can exceed 90 kg. The aluminium construction keeps the column itself light while delivering structural stiffness, which matters at drops of up to 335 cm where lateral movement under air-conditioning or HVAC airflow can cause image shake. The included set screw provides an additional mechanical lock against building vibrations, giving the audience a stable, steady image throughout a presentation.
Integrated Cable Management for a Clean Finish
A full-length internal cable channel runs through the column, with a dedicated exit port at one end for routing signal and power cables. This means HDMI, DisplayPort, or HDBaseT cabling can pass cleanly through the drop rather than being taped or clipped along the outside of the column — a detail that matters significantly in corporate, higher-education and hospitality environments where visible cabling is seen as unprofessional. The result is a neater ceiling installation that is easier to sign off on, simpler to audit, and less likely to be disturbed by maintenance staff.
UL Listed, TAA Compliant, 10-Year Warranty
The CMS0911 carries UL listing, confirming independent safety testing for ceiling-mounted loads in commercial buildings — a requirement in many US public-sector and corporate specifications. TAA compliance makes it eligible for US federal and government procurement contracts. Chief's 10-year warranty on non-electrical hardware is among the longest in the category and reflects the aluminium column's straightforward, durable construction. For end users, this combination of certification and warranty translates directly into reduced lifecycle risk and easier facility management approvals.
