Chief CMS261W — Column cut-off adapter for Chief extension columns
The Chief CMS261W is a column cut-off adapter designed for AV integrators who need to fine-tune the drop length of a Chief extension column on-site. When a column is cut to a shorter length to achieve the precise projector or display height required, the original threaded end is lost. The CMS261W bolts onto the cut end and restores full 1.5" NPT threading, allowing the column to reconnect to any compatible Chief mount component. The adapter is finished in white to match Chief's white column family and ships with all necessary set screws and bolts. It is the professional solution for custom-length column installations in corporate, education, and large-venue AV environments.
Restores NPT Threads After On-Site Cutting
Extension columns often need to be cut to a specific length during installation to achieve the exact projector or display height required by the room. Cutting the column removes the factory-machined 1.5" NPT threaded end, which is essential for connecting to Chief ceiling plates, pipe couplers, and mount heads. The CMS261W clamps onto the cut end and permanently restores that 1.5" NPT thread, so the column re-integrates with the rest of the rigging hardware exactly as if it had never been cut. This means the installer can trim columns on site with confidence, without sacrificing system integrity or having to order a replacement column of a different length.
Adds 5,1 cm to Installation Height
Because the adapter body itself has physical depth, it contributes 5,1 cm (2") to the overall column length once fitted. This is a predictable, fixed increment that must be factored into the drop calculation before cutting. For installers, this means subtracting 5,1 cm from the target column length before making the cut — a straightforward adjustment that ensures the finished installation lands at the correct ceiling-to-mount distance. Knowing this figure up front prevents costly re-cuts or column replacements and allows precise planning from a drawing or site survey.
Secure Fixing with Included Hardware
The CMS261W ships with dedicated set screws and bolts sized for the adapter, so no additional fasteners need to be sourced on site. The set-screw design grips the outer surface of the cut column firmly, resisting rotation and axial movement under load. This matters in permanent ceiling installations where the assembly may carry a projector or display for years without access for re-tightening. A secure, rattle-free connection also avoids vibration that could affect projected image stability, particularly in large-venue or high-traffic environments.
10-Year Chief Warranty
Like the rest of Chief's column and rigging hardware, the CMS261W carries a 10-year warranty. For an adapter that becomes a permanent structural element of a ceiling mount, this long coverage period gives the end customer assurance against material or manufacturing defects for the realistic working life of the installation — important in commercial environments such as corporate boardrooms, lecture theatres, or houses of worship where re-accessing a high ceiling mount is disruptive and costly.
