Chief CMS 491/492 12V FAN KIT - CMSFAN is backordered and will ship as soon as it is back in stock.
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Product Overview
The Chief CMSFAN is a 12V DC fan kit that cools AV components stored in above-tile ceiling enclosures. It is designed for use with Chief CMS491, CMS491C, CMS492, and CMS492C suspended-ceiling storage boxes. The kit suits commercial AV and digital signage installations that conceal equipment above the ceiling.
Product Description

This 12V DC fan kit provides the cooling needed for AV components stored in above-tile ceiling applications, where trapped heat can shorten equipment life. The included power supply is auto-ranging from 110 to 240 VAC at 50 or 60 Hz, so it works across standard commercial power without configuration. The fan provides 100 CFM of air movement to keep enclosed components within a safe operating temperature. It is intended for use with Chief's above-suspended-ceiling storage boxes, specifically the CMS491, CMS491C, CMS492, and CMS492C models. Installation is simple: the fan assembles to the housing using just two screws. The kit is also compatible with the NAFT85 inline thermostat, which lets integrators run the fan only when temperatures call for it. The CMSFAN is a practical add-on for protecting concealed AV gear in plenum and above-ceiling installations.
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Key Features
- Auto-ranging power — Power supply auto-ranges from 110 to 240 VAC at 50 or 60 Hz.
- 100 CFM airflow — Provides 100 CFM of air movement to cool enclosed components.
- Storage box compatibility — Intended for Chief CMS491, CMS491C, CMS492, and CMS492C ceiling storage boxes.
- Simple installation — Assembles to the housing using two screws.
- Thermostat ready — Compatible with the NAFT85 inline thermostat for temperature-based control.
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer | Chief (Legrand AV) |
| Model | CMSFAN |
| Product Type | 12V DC fan kit |
| Airflow | 100 CFM |
| Power Supply | Auto-ranging 110 to 240 VAC, 50/60 Hz |
| Compatibility | CMS491, CMS491C, CMS492, CMS492C storage boxes; NAFT85 thermostat |
| Installation | Two-screw assembly to housing |
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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