Chief SYSAU Plenum Rated Storage Box (White)

The Chief CMA474 is a suspended ceiling storage box that creates a tidy home for AV gear in air-handling spaces. Designed to work with the Chief SYS Suspended Ceiling Projector System, it lets you position source devices, surge protectors, or small control hardware above the ceiling while keeping them accessible and compliant with plenum requirements.

Installers will appreciate the way the enclosure slides along the included tile bridge. If an unexpected duct, pipe, or lighting run blocks the original spot, you can simply shift the box a few inches without re-framing the entire mount. Six conduit knockouts in three common sizes allow low-voltage and high-voltage cabling to pass through cleanly, so power and signal lines stay separated and organized.

Access is straightforward even in crowded plenum areas. Remove the side cover when space is tight or lift off the top panel for full entry from above. Either method gives technicians room to terminate cables, swap out equipment, or perform service without dismantling the projector system.

The painted white finish blends with most ceiling tiles, which helps the installation disappear from view in classrooms, corporate conference rooms, or retail environments that prioritize a clean interior look.

• Plenum rated enclosure that meets air-handling space requirements
• Works with the Chief SYS Suspended Ceiling Projector System
• Tile bridge allows the box to slide for obstacle avoidance
• Side and top covers remove for quick equipment access
• Six conduit knockouts in 0.5-inch, 1-inch, and 1.5-inch sizes support flexible cable routing
• Painted white finish blends with standard ceiling tiles
• Suitable for classrooms, conference rooms, and similar AV installations