SKU: 12517392727

Middle Atlantic 3RU Clamping Rackshelf

Sale price$100.44 Regular price$111.60
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Middle Atlantic 3RU Clamping RackshelfMiddle Atlantic 3RU Clamping Rackshelf Elevate the way you organize and protect your gear with the Middle Atlantic 3RU Clamping Rackshelf, a purpose built component for RC Series rack systems. Designed for professionals who demand dependable security, rugged construction, and streamlined setup, this 3RU clamping shelf combines intelligent engineering with practical features that keep equipment stable, well ventilated, and ready for mobile deployments.

Middle Atlantic 3RU Clamping Rackshelf

Elevate the way you organize and protect your gear with the Middle Atlantic 3RU Clamping Rackshelf, a purpose-built component for RC Series rack systems. Designed for professionals who demand dependable security, rugged construction, and streamlined setup, this 3RU clamping shelf combines intelligent engineering with practical features that keep equipment stable, well-ventilated, and ready for mobile deployments. The RC Series clamping rack shelves are crafted to withstand the rigors of touring, studio installations, and broadcast environments where gear must stay put while the rack itself moves. Built from 16-gauge steel and finished to endure transport and repeated rack cycling, this shelf delivers a durable platform for receivers, amplifiers, power supplies, controllers, and other critical hardware. The rubber-lined clamps cradle the top surface of each component, distributing pressure evenly and minimizing surface marring while preventing micro-movements that can degrade performance over time. Adjustable rear L-brackets add another level of security by preventing units from sliding backward, which is especially valuable in mobile applications where vibration and acceleration are common. All of these features come together in a compact 3RU footprint that fits cleanly into standard rack envelopes, offering a reliable, organized storage solution without compromising airflow or access to front-panel controls. If you need to stack, transport, or simply consolidate equipment in a rack environment, this clamping shelves system provides a trusted, shop-tested approach to maintaining order, reliability, and repeatable setups across venues, studios, and facilities.

  • Secure clamping design: Rubber-lined clamps grip the top of each mounted component, providing a secure, non-marring hold that minimizes movement during transport and operation. This attention to clamp geometry helps protect delicate front panels and connectors while keeping gear stable in mobile environments.
  • Adjustable rear L-brackets for precise fit: The adjustable rear L-brackets can be tuned to the depth and profile of installed equipment, preventing units from being pushed back and ensuring consistent alignment with front-panel controls. This feature is especially beneficial when mounting mixed-size gear or when accuracy matters for cable access and label readability.
  • Vented bottom and 16-gauge steel construction: A vented bottom design promotes airflow around mounted gear, aiding cooling during long sessions or road travel. The robust 16-gauge steel frame provides long-lasting strength to withstand frequent rack cycling, handling, and the stresses of mobile use without bending or flexing.
  • RC Series compatibility for seamless integration: Engineered as part of the RC Series clamping shelf family, this 3RU rackshelf integrates smoothly with other RC Series components, delivering a cohesive mounting solution that aligns with Middle Atlantic’s rack standards and warranty expectations.
  • Ready-for-mobile applications: Built with mobility in mind, the clamping rackshelf supports quick installation and removal, resilience against vibration, and dependable performance when racks undergo movement between venues, stages, or studios. It’s an ideal choice for technicians who need secure, adaptable shelving that travels as well as it performs.

Technical Details of Middle Atlantic 3RU Clamping Rackshelf

  • Series: RC Series
  • Rack Unit: 3RU height
  • Clamping mechanism: Rubber-lined top clamps for secure, surface-safe grip
  • Rear brackets: Adjustable L-brackets to prevent backward movement
  • Bottom design: Vented to promote cooling and airflow
  • Material: 16-gauge steel for rigidity and durability
  • Applications: Optimized for mobile and studio rack environments requiring stable, adjustable shelving

How to install Middle Atlantic 3RU Clamping Rackshelf

  • 1. Prepare the rack: Inspect the rack enclosure to ensure rails are clean, straight, and capable of supporting a 3RU shelf. Confirm there is adequate clearance for clamps, the vented bottom, and access to front-panel controls.
  • 2. Position the shelf: Slide the 3RU clamping rackshelf into the rack cavity, aligning it with the vertical rails at the desired depth. Verify that the shelf sits evenly and that the front edge aligns with other mounted gear for a clean, professional appearance.
  • 3. Engage the top clamps: Apply the rubber-lined clamps to secure the top surface of the component. Tighten gradually to achieve a secure hold without over-compressing the equipment’s chassis or faceplate.
  • 4. Set the rear brackets: Adjust the rear L-brackets to match the depth of the mounted gear and to prevent any backward movement. Tighten the brackets securely so that the equipment remains steady during transport and operation.
  • 5. Check clearance and airflow: Confirm that the vented bottom remains unobstructed and that there is sufficient clearance around the gear to allow heat to escape and air to circulate as designed.
  • 6. Perform a stability test: Gently shake the rack shelf to ensure that clamps and brackets hold firmly. If movement is detected, re-tighten clamps and brackets and recheck alignment before powering equipment or moving the rack.

Frequently asked questions

  • Q: What is the primary purpose of the RC Series clamping rackshelf? A: To securely hold equipment inside a rack enclosure while maintaining organization, reducing movement during transport, and enabling quick, repeatable setups in mobile and fixed installations.
  • Q: What material is used for the 3RU clamping rackshelf? A: The shelf uses 16-gauge steel for a strong, durable frame capable of withstanding the demands of rack environments and travel.
  • Q: How do the rubber-lined clamps protect equipment? A: The rubber lining distributes clamping force evenly across the top surface, minimizes surface marring, and cushions contact to protect front panels and delicate connectors during vibration and movement.
  • Q: Can I adjust the rear brackets for different equipment depths? A: Yes. The rear L-brackets are adjustable to accommodate various depths and to prevent units from sliding backward, ensuring a stable, aligned installation.
  • Q: Is this shelf suitable for mobile installations? A: Absolutely. The vented bottom, steel construction, and clamping system are designed to endure the rigors of mobile use, transport, and repeated rack cycling.
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: 12517392727

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4.1 ★★★★★
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Harold C.
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★★★★★ 5
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Color: Aqua Blue
It’s perfect! Larger than or last one. Easy to set up. Fits in a standard table hole and base. The color is just what the dogs wanted! Everything is always so grey and dull! The turquoise really pops
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Reviewed in the United States on May 29, 2026
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Mike W
Boise, US
★★★★★ 4
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Color: Beige
This umbrella is extremely easy to setup. It is lightweight and because of the three tier design it adds beautiful features to your back yard.
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Reviewed in the United States on May 14, 2026
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Lynn
Port Orchard, US
★★★★★ 1
No customer service for product under warranty
Color: Beige
loved this umbrella for the 4 months we used it. did a lot of research to find an umbrella that would stand up to New England "breezes" -- this one was advertised as wind resistant; bought in June 2025, seemed very sturdy, really nice-looking, used on our patio (installed in the base the recommended base) through the summer; stored indoors for the winter; brought back onto patio a couple weeks ago. On a day with average wind a couple weeks ago, the tilt mechanism broke. Umbrella did not fall over, a gust of wind just forced the tilt mechanism to snap. Spent a lot of time trying to fix it, but it's permanently broken. It's less than a year old so still under warranty, as stated in the materials they sent with the umbrella. Same materials list the email to contact if there are any problems with the product. Have emailed the company, twice now, asking for a refund or replacement. Radio silence. Don't buy this unless you're ok with throwing it away after four or five months of use and being ignored by customer service.
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Reviewed in the United States on May 29, 2026
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KNexus
Belleville, US
★★★★★ 3
Third time in 10 years nerding out on an Amazon patio umbrella on a budget...
Color: Navy Blue, Color: Navy Blue
Color: Beautiful, but the fabric is thinner than other options that are only ~$10 more. Tilt mechanism: Major reason for my 3:5 stars. It's plastic with a metal fastener through the middle. We won't be tilting this umbrella in any wind gust situations over 5mph. The warnings on the stickers and in the instructions make it clear this is a limitation, but it's not mentioned in the listing details. Quality | Value for money: Overall very mid. This is a nice 3-tiered umbrella at a near rock-bottom budget price for that class. I have found other mystery brand umbrellas on Amazon that have lasted for 5+ years, albeit with some (in my opinion) acceptable fading and rust. This umbrella leans hard into plastic everywhere except the fasteners. The ribs and pole are almost as thin as a few layers of beer cans pressed together. At least at the 10' and up diameter, this umbrella requires you to install equally flimsy-feeling extensions in order to get to 10', full sail. Final thoughts: This time around I chose price + delivery speed over quality, and I have a hunch I will be getting what I paid for. I doubt this umbrella lasts for more than 2 to 3 years without UV treatments and a very solid, heavy base.
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Reviewed in the United States on May 26, 2026
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Kevin
Lowell, US
★★★★★ 5
Excellent Value.
Color: Forest Green, Color: Forest Green
Excellent value. Well made. Assembles in a few minutes. Note that the tilt control is the single click type. You push a button on the support column and tilt the umbrella until it picks in place. Venting design is helpful in keeping umbrella from tipping over in moderate wind. Fabric is a light synthetic. We chose green which we like.
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