Chief CMA474

Overview

The Chief CMA474 is a plenum rated storage box designed for suspended ceiling installations, providing a secure and organized space for AV equipment in air-handling environments. It is specifically made to complement the Chief SYS Suspended Ceiling Projector System, allowing you to position source devices, surge protectors, or small control hardware above the ceiling while maintaining easy access and compliance with plenum safety standards. Its white painted finish helps it blend seamlessly with standard ceiling tiles, making it ideal for classrooms, conference rooms, and retail spaces that require a clean and professional appearance.

Key features

• Plenum rated enclosure ensures safe installation in air-handling spaces, meeting building code requirements.
• Tile bridge design allows the storage box to slide horizontally, enabling quick adjustments to avoid obstacles like ducts or pipes without re-framing the mount.
• Removable side and top covers provide flexible access options for technicians, simplifying cable termination, equipment swaps, and maintenance.
• Six conduit knockouts in 0.5-inch, 1-inch, and 1.5-inch sizes support organized routing of both low-voltage and high-voltage cables, keeping power and signal lines separated.
• Painted white finish integrates with most ceiling tiles, helping the installation remain discreet and visually unobtrusive.

Key specs

• Plenum rating: compliant for use in air-handling spaces
• Conduit knockouts: six total, sizes 0.5-inch, 1-inch, and 1.5-inch
• Finish: painted white to match standard ceiling tiles
• Compatibility: designed for use with Chief SYS Suspended Ceiling Projector System

Installation and setup

The CMA474 simplifies installation by sliding along the included tile bridge, allowing installers to adjust the box position easily if ducts, pipes, or lighting runs interfere with the original placement. This flexibility reduces the need for complex re-framing and speeds up the setup process. Access panels can be removed from the side or lifted off the top, providing convenient entry points even in tight plenum spaces, which helps technicians perform cable management and equipment servicing efficiently.

Ideal uses and environments

This storage box is well suited for AV installations in environments where maintaining a clean ceiling appearance and meeting plenum safety standards are critical. It fits naturally in classrooms, corporate conference rooms, and retail spaces where AV gear needs to be securely housed above the ceiling but remain accessible for maintenance. Its design supports organized cable routing and equipment placement, making it a practical choice for professional AV setups that require neatness and compliance.

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, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, 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; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

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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