Peerless-AV Plenum Box for CMJ500, 455, 453 & 450 (White)

Overview

The Peerless-AV PB-1 is a plenum box designed to organize and conceal cabling and junction points for ceiling-mounted displays and projectors. It fits seamlessly with Peerless-AV mounts such as the CMJ500, 455, 453, and 450, providing a code-compliant space above drop ceilings. Measuring 7.9 by 6 by 15 inches and weighing 9.2 pounds, it offers enough room for common junction boxes while maintaining a low profile that preserves overhead clearance.

Key features

• Heavy gauge cold rolled steel construction ensures durability against daily vibration and maintenance activities
• Slide-on lid design allows for quick initial installation, reducing setup time and focusing effort on projector alignment
• Optional lockdown screw secures the lid to protect wiring from tampering or accidental exposure
• Up to 3 inches of lateral adjustment helps align the box precisely with the mounted display or projector
• Multiple conduit knockouts sized for 0.5, 0.75, and 1 inch conduit runs provide flexible cable entry options from any side
• Internal knockouts accommodate additional mounting brackets for extra equipment inside the enclosure
• White epoxy finish resists scratches and blends with ceiling tiles for a professional, clean appearance

Key specs

• Material: Heavy gauge cold rolled steel
• Dimensions: 7.9 x 6 x 15 inches
• Weight: 9.2 pounds
• Conduit knockout sizes: 0.5 inch, 0.75 inch, and 1 inch
• Lateral adjustment range: up to 3 inches
• Compatible mounts: Peerless-AV CMJ500, 455, 453, and 450 ceiling plates

Installation and setup

The PB-1 simplifies installation with its slide-on lid that can be quickly positioned over a standard ceiling plate. This design minimizes the time spent on hardware assembly, allowing installers to focus on precise projector aiming. The optional lockdown screw adds security by keeping the cover firmly in place, which is especially useful in public or high-traffic environments.

Ideal uses and environments

This plenum box is well suited for corporate boardrooms, university lecture halls, classrooms, and other spaces with drop ceilings where a neat and code-compliant cable management solution is required. Its sturdy build and flexible conduit options make it a reliable choice for installations that demand both functionality and a clean aesthetic.