Chief CMA640B

Overview

The Chief CMA640B is a finishing ring designed to conceal the rough openings created when CMS or CPA extension columns pass through suspended ceiling tiles. With an inner diameter of 1.9 inches, it fits precisely around common column systems, providing a clean and professional appearance. Its hinged design allows for easy installation on both new and existing columns without the need to remove mounted equipment, making it a practical solution for maintaining a polished ceiling line in various environments.

Key features

• Hinged body enables installation around existing columns without dismounting equipment, simplifying retrofit and new installations.
• Black finish blends seamlessly with most ceiling grids and mounting hardware, ensuring a cohesive and unobtrusive look.
• Durable construction withstands repeated adjustments, supporting long-term use in commercial and residential settings.
• Specifically sized with a 1.9-inch inner diameter to fit Chief’s CMS and CPA extension columns accurately.
• Purely decorative design that does not add weight or affect load calculations, focusing solely on aesthetic enhancement.

Key specs

• Inner diameter: 1.9 inches
• Finish: Black
• Compatibility: Fits CMS and CPA extension columns
• Design: Hinged for easy installation and adjustment
• Application: Suitable for suspended ceilings in commercial and residential environments

Installation and setup

The hinged design of the CMA640B finishing ring allows installers to position it either before or after the column is in place. This flexibility means you can wrap the ring around an existing column without removing the mount, saving time and effort during upgrades or retrofits. Its durable build ensures it holds up well through multiple adjustments, making it a reliable choice for ongoing maintenance and changes.

Ideal uses and environments

This finishing ring works well in conference rooms, classrooms, retail spaces, and residential theaters where suspended ceilings are common. It is a strong choice for professionals looking to maintain a tidy and distraction-free ceiling line while upgrading or installing projector mounts and display systems. The black finish complements typical ceiling grids, helping the installation blend naturally into the room’s design.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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