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Description
Chief CMSUNV1 Mounting Shelf for A/V Equipment - SilverEnhance your CMS491 1' x 2' plenum rated storage box with the CMSUNV1 mounting shelf, a purpose built addition that brings organized, accessible space to your A V setup. Ideal for classrooms, conference rooms, studios, and control rooms, this shelf maximizes efficiency by giving you a dependable mounting surface for media players, encoders, small processors, and other compact AV components. Its sleek silver finish blends seamlessly with the Chief
Enhance your CMS491 1' x 2' plenum-rated storage box with the CMSUNV1 mounting shelf, a purpose-built addition that brings organized, accessible space to your A/V setup. Ideal for classrooms, conference rooms, studios, and control rooms, this shelf maximizes efficiency by giving you a dependable mounting surface for media players, encoders, small processors, and other compact AV components. Its sleek silver finish blends seamlessly with the Chief ecosystem, maintaining a professional, cohesive appearance across racks and enclosures. Designed for everyday use in demanding environments, the CMSUNV1 emphasizes stability, reliability, and ease of use with a Quick Disconnect feature that simplifies maintenance and reconfiguration without sacrificing performance.
- Additional shelf for the CMS491 1' x 2' plenum-rated storage box, increasing organization and space for AV components.
- Maximum load capacity of 25 lb, accommodating a wide range of equipment while preserving airflow and clearance.
- Quick Disconnect feature for faster setup, reliable use, and uncomplicated reconfiguration as your AV needs evolve.
- Silver finish that matches Chief’s AV mounting ecosystem for a clean, professional look in any installation.
- Easy mounting with the CMS491 mounting points, enabling straightforward retrofits and scalable deployments in classrooms, boardrooms, studios, and control rooms.
Technical Details of Chief CMSUNV1 Mounting Shelf
- Compatibility: CMS491 1' x 2' plenum-rated storage box
- Maximum Load Capacity: 25 lb
- Finish: Silver
- Material: Durable metal construction designed for long-lasting performance
- Quick Disconnect: Yes
- Mounting Method: Attaches securely to CMS491 box using standard mounting points
How to Install Chief CMSUNV1 Mounting Shelf
Install the CMSUNV1 mounting shelf with minimal downtime, keeping your AV system organized and accessible. Follow these practical steps to ensure a secure, stable addition to your CMS491 plenum-rated storage box.
- Step 1: Power down any connected equipment and disconnect cables to prevent accidental engagement during installation.
- Step 2: Align the CMSUNV1 mounting shelf with the CMS491 1' x 2' plenum-rated storage box’s mounting points. Confirm that the pre-drilled holes line up with the box’s mounting locations for a proper fit.
- Step 3: Attach the shelf using the mounting hardware supplied with the CMSUNV1, or the hardware specified by your installation kit. Tighten fasteners evenly to avoid stresses and ensure the shelf sits level.
- Step 4: Engage the Quick Disconnect feature as required to secure the shelf and verify that it releases and re-engages smoothly for future maintenance or reconfiguration.
- Step 5: Reinstall any components or equipment onto the shelf, staying within the 25 lb weight limit. Check clearances for ventilation and cable routing, and perform a light load test before returning the system to full operation.
Frequently Asked Questions
- Q: What is the CMSUNV1 used for? A: It adds a durable, detachable shelf to the CMS491 1' x 2' plenum-rated storage box, expanding storage capacity and providing a stable surface for AV equipment.
- Q: What is the weight limit? A: The mounting shelf supports up to 25 lb, suitable for a variety of AV components and accessories while preserving airflow.
- Q: Is the shelf plenum-rated? A: Yes, designed to work with CMS491 plenum-rated storage boxes in compliant installations that require plenum-rated components.
- Q: How do I install it? A: Install using the standard CMS491 mounting points and hardware supplied with the CMSUNV1; refer to the installation steps above for detailed guidance.
- Q: Will it affect ventilation? A: The shelf is designed to maintain appropriate clearance and airflow within the plenum-rated enclosure; ensure proper spacing and cable management to prevent overheating.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
VERY NICE PHONE
Digital Storage Capacity: 128 GB, Color: Blue
I have had it a few months now and it works great very smooth running with no lag online and sounds great to and the Bluetooth works well and has a good camera very clear with a good zoom its definitely worth the money you won't be disappointed
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Reviewed in the United States on June 8, 2026
★★★★★ 3
The absolute bottom line in performance and price.
Digital Storage Capacity: 128 GB, Color: Black
This phone is the bottom line. It's just enough RAM. A nice OLED display. And that is about it. This dog was heaving like it was running a marathon after set up and a restart. Normally I'd buy a refurbished Pixel, but the prices and support dates are out of my budget sadly. Just playing around to see how the menus looked, the UI crashed after hanging for about 45 seconds. I can't say I hate it, there's much worse out there. Hence I'd call this the bottom line, lowest standard.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
good
Digital Storage Capacity: 128 GB, Color: Blue
For the price, I found this to be a very complete phone. The screen looks good, the battery lasts a long time throughout the day, and it runs smoothly for everyday tasks. I liked that the initial setup was easy and that the device responds quickly for calls, apps, and social media. A great option for anyone looking for a reliable phone without spending too much.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
6 years of support, but set your expectations.
Digital Storage Capacity: 128 GB, Color: Blue
I was a Moto user. Before moving over to Android, I was among the 0% that used a Windows Phone. My needs have been modest, so the idea of shelling out nearly a thousand or more for a phone never crossed my mind. What is important is ongoing support, which rules out every cat-sat-on-a-keyboard brand. It’s also the reason why I switched from Moto over to Samsung; offering 6 years of OS and security support (from initial release) on an entry-level class device is a HUGE PLUS. In the case of this A17, that’s all the way into August 2031.
This is NOT a fast phone by any means, however. Playing media and general browsing? Sure. Playing video? Fine. Lots of videos at once like on some social media platforms? Not so much. Taking videos? It's only 1080p. More immersive games? I wouldn’t bother. Between the processor and the 4GB of RAM, some patience will be necessary, especially for folks running lots of apps. There is more underlying “bloat” here; turning off the animations under developer mode along with unneeded services improves the experience a bit, however.
The A17 phone case I purchased separately for this arrived labeled as an A26; the glass screen protector as an A16, so apparently this phone shares a very similar design with those models. No 3.5mm jack but there is a micro SD slot which it shares with the SIM tray. The AMOLED screen is a huge plus; great contrast and sharpness, which is NOT common in this entry-level class. It does have NFC for tap to pay, but no wireless charging.
Will this win any benchmarks? No. Folks expecting sports car performance at an economy car price will be extremely disappointed. This does not nor will not compare to phones that cost more. However, if your needs are modest, there’s no need to spend $$$ either when this will do the job.
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Edit: Just for added confirmation about ongoing support (or lack thereof), the Moto G17 that was just released at the end of January 2026 does NOT promise ANY OS updates at all. That's a stark contrast to the A17 here with a promise of 6 years of OS and security updates.
Edit 2: Wireless Android Auto connectivity has become tedious with the aftermarket generic Android head unit on my vehicle, with the phone often forgetting to connect. The real culprit is that those units are often running hardware and an OS older than what they advertise; it may say 15 on the surface but underneath, it's actually running like 10 or even older. Getting a USB wired-to-wireless CarPlay/Android Auto adapter fixed that; the phone has remembered to connect every time since. For less than $10, it was worth taking that chance.
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Reviewed in the United States on January 23, 2026
★★★★★ 4
Bright Screen, Easy to Use, and Reliable for Everyday Life
Digital Storage Capacity: 128 GB, Color: Blue
I’ve been using the Samsung Galaxy A17 5G for a bit now, and overall I’m really happy with it. It feels like one of those phones that quietly does almost everything well without costing a fortune.
The first thing I noticed was the display. The large AMOLED screen is beautiful. Colors are vibrant, text is crisp, and it makes everything from scrolling to watching videos feel more high end than I expected. It’s easily one of my favorite features.
This phone is also very easy to use and user friendly. The layout is straightforward, settings are easy to find, and everything just makes sense without a steep learning curve. It’s a great option if you want something simple to navigate without feeling overly basic.
Performance has been solid for everyday tasks like texting, browsing, and using apps. One thing I did notice is that right after powering it on, the screen can feel a bit sluggish and slightly unresponsive. It seems like the system and background apps are still loading. Once everything finishes starting up, though, it runs smoothly and works great.
The camera is another nice surprise. In good lighting, photos come out sharp with natural looking color. Outdoor shots especially look really nice. Low light is a bit hit or miss, but still decent for casual use.
Battery life easily gets me through a full day, and the fast charging is really convenient when I need a quick boost. I also like the durable feel of the phone. It’s slim but doesn’t feel fragile, and the expandable storage is a huge plus if you store a lot of photos or apps.
A couple minor downsides: it can slow down a little if too many apps are open at once, and low light photos aren’t its strongest area.
Overall: This is a dependable, user friendly phone with a gorgeous screen and solid everyday performance. It’s a great choice if you want something simple, functional, and comfortable to use without spending a lot.
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Reviewed in the United States on March 23, 2026