Chief CMA366

The Chief CMA366 Architectural Spanning Adapter is designed for integrators who need to mount AV equipment — projectors, displays or monitors — directly to overhead truss structures in buildings, conference rooms and exhibit booths. By clamping onto circular or square tubing and connecting to a standard 1.5" NPT extension column, the CMA366 bridges the gap between the truss and the mount while simultaneously providing lateral positioning flexibility. Cable management is built in through the column path, keeping installations clean and professional. Made from steel and finished in black, it is rated to support loads up to 113,4 kg and is both UL Listed and TAA Compliant, making it a reliable choice for government and institutional projects.

Adjustable Span with Lateral Shift

The CMA366 spans a continuously adjustable distance of 12,7–45,7 cm, which means the installer is not locked into a fixed position relative to the truss chord. The added lateral shift capability lets the mount head be repositioned horizontally after clamping, so the projector or display can be precisely centred on the screen without moving the truss clamps. In practice, this saves significant time on show-site or during final alignment in a fixed installation — particularly valuable when the truss position is dictated by structural constraints rather than ideal AV geometry.

Universal Truss Compatibility

The clamp mechanism accepts round tubing up to 5,1 cm OD and square tubing up to 4,8 cm — covering the vast majority of standard truss profiles used in AV rental/staging, retail and architectural installations. This broad compatibility means a single SKU works across different venue truss types, reducing the need to stock multiple adapters. The steel construction ensures the joint is rigid, maintaining the correct projection angle even under vibration from HVAC or foot traffic on elevated stages.

One adapter. Any truss. Perfect overhead alignment.

UL Listed · TAA Compliant · Max load 113,4 kg

Integrated Cable Routing Through the Column

Cables run internally through the 1.5" NPT extension column connected to the CMA366, keeping power and signal cables fully concealed from ceiling to projector. For permanent installations in corporate boardrooms, lobbies or museums this eliminates the need for external cable conduit or wire loom along the drop — a finish detail that matters to end clients. It also reduces the risk of cables being accidentally snagged or disconnected after commissioning.

High Load Rating — Up to 113,4 kg

The CMA366 is rated for a maximum load of 113,4 kg, which accommodates virtually any projector or flat panel display in the market, including large-format laser projectors and commercial-grade displays. This rating gives integrators confidence that the adapter is not the limiting component in a ceiling system, allowing them to specify it across a wide range of projects without recalculating structural limits for each job.

UL Listed and TAA Compliant

UL Listing confirms that the CMA366 has been independently tested to recognised safety standards — a requirement for many commercial building permits and insurance policies. TAA (Trade Agreements Act) compliance means the product qualifies for US federal government procurement contracts. Together, these certifications remove administrative barriers for integrators working on government facilities, education projects or other regulated environments where product compliance documentation is part of the tender requirement.