SKU: 74801403327

Middle Atlantic MRK Series Rack, 40 RU, 42"D, w/o Rear Door

Sale price$1042.47 Regular price$1158.30
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Description

Middle Atlantic MRK Series Rack, 40 RU, 42"D, w/o Rear DoorThe MRK Series represents Middle Atlantics rugged, high capacity enclosure solution built to perform on demanding AV and IT installations. When space is at a premium and reliability is non negotiable, the MRK 40RU 42" rack delivers a robust, space saving footprint that thrives on multi bay projects and large scale deployments. Designed with contractors in mind, this 40 rack unit (RU) enclosure combines a compact exterior with expansive internal room,

The MRK Series represents Middle Atlantic’s rugged, high-capacity enclosure solution built to perform on demanding AV and IT installations. When space is at a premium and reliability is non-negotiable, the MRK-40RU-42" rack delivers a robust, space-saving footprint that thrives on multi-bay projects and large-scale deployments. Designed with contractors in mind, this 40 rack-unit (RU) enclosure combines a compact exterior with expansive internal room, giving you the flexibility to mount, organize, and protect your valuable equipment while maintaining clean cable management and optimal airflow. Though listed as w/o rear door, the MRK Series is built to accommodate rear-access options and accessories, offering a scalable path from installation to expansion without compromising structural integrity or ease of service.

  • Rugged, space-saving design for demanding multi-bay installations: The MRK Series is engineered to maximize floor space without sacrificing capacity or accessibility. Its sturdy frame supports dense equipment layouts, enabling multi-bay configurations that streamline installation across data centers, control rooms, or broadcast environments.
  • 40 RU capacity with a generous 42" depth: This enclosure provides ample vertical and depth clearance for full-size 19" equipment, patch panels, power distribution, and cable management arms. Deep racks like this are ideal for servers, audio-visual gear, network switches, UPS units, and large LCD/LED stages of gear that require more room behind front-mounted equipment.
  • Seismic certification and high load rating: The MRK Series is designed to meet stringent seismic requirements, giving installers confidence in stability and safety for elevated or earthquake-prone environments. A high seismic load rating translates to reliable performance under dynamic conditions, making it a trusted choice for commercial facilities and institutions.
  • Flexible configuration with accessories for future growth: While this model ships without a rear door, it is compatible with rear-door kits and other MRK accessories to tailor the enclosure to evolving needs. The modular design supports accessory rails, ventilation solutions, cable management systems, and mounting rails that can be adjusted as gear changes occur, ensuring long-term value.
  • Trusted build quality from Middle Atlantic: As a staple in professional AV and IT installations, Middle Atlantic enclosures are known for durable steel construction, clean powder-coated finishes, precise tolerances, and thoughtful interior layouts that simplify installation and service while preserving appearance and performance over time.

Technical Details of Middle Atlantic MRK Series Rack, 40 RU, 42"D, w/o Rear Door

  • Get this information from the "specifications" section of the product from https://ec.synnex.com/ using product "UPC" or "SKU" as reference

how to install Middle Atlantic MRK Series Rack, 40 RU, 42" Deep, w/o Rear Door

Installing the MRK Series enclosure is a straightforward process designed to minimize site time while ensuring secure mounting for heavy equipment. Follow these general steps to achieve a clean, code-compliant installation:

1) Plan and prepare: Confirm the installation location, ensuring the floor or wall area can support the weight of fully loaded equipment. Verify access for front and side panels, ventilation, and cable management pathways. Consider future expansion when laying out equipment order and rack occupancy.

2) Assemble and place the rack: With the MRK rack upright, attach any required base or stabilization hardware per the manufacturer’s guidelines. If mounting to a base or rack cabinet system, align the frame precisely to prevent skew or misalignment that could impede door operation or rail mounting.

3) Install mounting rails: Attach 19" rack rails to the sides of the enclosure at the appropriate heights for your equipment. Ensure rails are level and securely fastened to support the cumulative weight of all devices. Use proper hardware and spacers as specified for rail depth and equipment depth compatibility.

4) Wire management and ventilation planning: Install any cable management arms, finger ducts, and perforated panels as needed to promote clean cable routing and adequate airflow. Plan power distribution and cooling paths to prevent heat buildup and ease serviceability.

5) Load equipment and balance weight: Mount servers, switches, patch panels, and power strips with balanced weight distribution to maintain rack stability. Follow standard 19" mounting practices, tighten hardware to the specified torque, and avoid over-tightening to prevent rail or chassis damage.

6) Final checks and service access: Verify that all equipment is securely fastened, doors (where applicable) operate smoothly, and cable bundles are neatly organized with clear pathways for maintenance. If you added a rear-door accessory later, confirm latch alignment and clearance for rear-facing equipment or cables.

7) Compliance and labeling: Document the rack configuration, including device labeling, cable color-coding, and weight distribution notes. Ensure the installation meets local codes and any seismic requirements applicable to your facility.

Frequently asked questions

  • Q: Is this MRK rack shipped with a rear door? A: No. This model is specified as w/o rear door. A rear-door accessory is available separately for added rear access and cable management options.
  • Q: What kind of equipment fits in the MRK Series rack? A: The MRK Series supports standard 19" equipment with a total of 40 RU. Its 42" depth is ideal for deep servers, large switches, audio-visual processors, patch panels, and related gear that requires extra depth for proper ventilation and cable routing.
  • Q: Does the rack meet seismic certification? A: Yes. The MRK Series is designed to deliver seismic-certified performance, providing stability and compliance on large multi-bay installations and in environments subject to movement or vibration.
  • Q: Can I customize the MRK rack with accessories? A: Absolutely. The MRK line is designed for modular upgrades—accessory rails, cable management, ventilation options, and doors can be added to suit evolving infrastructure needs while preserving structural integrity.
  • Q: What installation considerations should I keep in mind? A: Plan for weight distribution, airflow, and ease of service. Ensure proper anchoring if required by building codes, confirm dimensions align with your equipment, and allow space for future growth and door access if you intend to add rear or front doors later.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 74801403327

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4.8 ★★★★★
Based on 18 reviews
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Verified Purchase
C. Coleman
Los Angeles, US
★★★★★ 5
Quality Case
Color: Pink
This is an All in Pne case. I really like the lavender color with sparkles. It is a little heavier than expected but I still love it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 3
Ok, but don’t use hand cream
Color: Black, Color: Black
I like the case for its ability to house the keyboard, the pencil and the iPad in one convenient place. I find that the magnetic closure and magnets holding the keyboard are not as strong as a previous case I had purchased. The keyboard is great, I like the touchpad and the backlight colors. The cover material is not hand lotion friendly! I’ve tried water and lens cleaning wipes, and neither gets this cover clean. I hesitate to use any chemicals because the material is the type that will get sticky and nasty, and I don’t like that. I’ve included a photo of what the cover looks like after using a lens cleaning wipe. If the magnets were stronger and the cover material easier to clean, I would buy again.
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Reviewed in the United States on February 27, 2026
S
Verified Purchase
Seth Walton
Charlottesville, US
★★★★★ 4
great case!
Color: Navy Blue
pros; the color is beautiful. I picked the navy blue. It is exactly as the description described. It goes very well with my blue iPad. The size is very precise and fits perfectly on my iPad. The magnet that holds the case together is very strong. The iPad itself can pivot vertically and horizontally using that magnet. This works very smooth. The magnet closure for the case itself is strong and holds well. The magnet that holds the keyboard in place also works very well. Cons; when the keyboard is in its correct position, it is difficult to angle the iPad in front into the provided grooves. The keyboard gets into the way. This prevents the iPad from reaching the grooves provided. The keyboard feels very light and cheap. The keyboard itself connected with the Bluetooth very easily. It works wonderful. I love the back light on the keyboard. The color of the keyboard is wonderful. However, as I said above, it does feel a bit cheap. But for 20 bucks, what can you ask for. When the case is folded together with the keyboard in the iPad, it is a bit bulky. But I knew that from the previous reviews and was expecting it. What I love most about this case is that the iPad can be removed using the magnet on the back from the keyboard portion, but it is still protected by the exterior plastic case. So in situations where I don’t need to use my keyboard, I can remove the iPad itself and know that it’s still protected overall I recommend this product.
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Reviewed in the United States on January 18, 2026
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 5
Nice Case & Keyboard
Color: Blue
Love this case with a keyboard. I like using the keyboard vs using one on the screen of iPad. And the keyboard has rechargeable batteries instead of having to buy batteries. And it protects my iPad.
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Reviewed in the United States on May 20, 2026
E
Verified Purchase
Eli Beltran
Chelsea, US
★★★★★ 1
Beautiful, and everything I want it except that the keyboard keys didn’t work😭
Color: Light Pink
I searched and search for the right keyboard case for me. The most important thing for me was to be able to remove the iPad case itself from the whole case and keyboard, and this one was it. Unfortunately, when I started checking the keyboard a lot of The keys were not output in the correct symbol or letters. So defeats the whole purpose of having a keyboard. I returned it and asked for a replacement, thinking that the item was defected, but when I got the New replacement, it was the same thing so I tried to contact the seller, but there was no option to do that. Therefore, I had to return the second replacement keyboard and look for another keyboard cover.
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Reviewed in the United States on March 23, 2026

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