1' x 2' Above Suspended Ceiling Storage Box
White storage box for 1' x 2' ceiling tiles with a 100 lbs total weight capacity and integrated ventilation
The Chief CMS491 is an above-suspended-ceiling storage box designed to conceal AV equipment in professional environments like classrooms and conference rooms. Sized to fit a 1' x 2' (30.48 x 60.33 cm) ceiling tile, this unit provides a clean, unobtrusive look by hiding components above the grid. It features a drop carriage door that improves accessibility and serviceability, granting full access to the equipment once installed. This model is UL evaluated for use in Air-Handling Spaces as defined by Article 300.22, Sub-clause (C) of the NEC. The unit includes integrated ventilation and can accommodate up to 1 single gang or 2 dual gang outlets via 4 nested knockouts designed for 1-1/4", 1", and 1/2" diameter conduit. For enhanced power protection, the unit can be paired with an EGX-SF2 Power Filtering & Surge Protection Wall Outlet.
Specifications are supplied by the manufacturer. For complete details, check the Resources section.Key features
Specifications
Main specifications 8
| Ceiling Tile Size | 1' x 2' (30.48 x 60.33 cm) |
| Depth | 23.67 in (60.1 cm) |
| Height | 8 in (20.3 cm) |
| Max Equipment Size | 7.61" x 19.25" x 12" (193 x 489 x 305 mm) |
| Overall Dimensions | 8" x 12.97" x 23.67" (203 x 329 x 601 mm) |
| Shipping Weight | 25.91 lbs (11.8 kg) |
| Weight Capacity | 100 lbs (45.4 kg) |
| Width | 12.97 in (32.9 cm) |
All other specifications 9
| Accessory Type | Component StorageSuspended Ceiling |
| Accommodate Column Drop | No |
| Application | Ceiling |
| Color | White |
| Includes Power Outlet | No |
| Special Features | Surge and Filtering |
| TAA Compliant | Yes |
| UPC | 841872162874 |
| Certifications | TAAUL Listed |
Resources
You'll need these with it
Questions about this part
What is the maximum equipment size for the CMS491?
The maximum equipment size this storage box can accommodate is 7.61" x 19.25" x 12" (193 x 489 x 305 mm).
What do I need to purchase to add a second shelf?
This unit ships with one shelf included; a second shelf must be purchased separately using part number CMSUNV1.
How much weight can the shelves and projector plate hold?
The unit has an overall capacity of 100 lbs (45.4 kg). Specifically, the projector ceiling plate supports 50 lbs (22 kg) and each shelf location supports 25 lbs (11 kg).
Does this storage box include power outlets?
The CMS491 does not include power outlets, but it features 4 nested knockouts for 1-1/4", 1", and 1/2" diameter conduit and can accommodate up to 2 dual gang outlets.
Can I install the power housing before the box is in the ceiling?
Yes, the detachable power housing is designed to be pre-installed with electricians on site and then assembled to the storage box at a later time.

