Chief SYSAU Plenum Rated Storage Box (White)

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.