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Description
Middle Atlantic Solid Rear Door, 44 RU RacksEngineered for professional AV, IT, and data center environments, the Middle Atlantic Solid Rear Door for 44 RU Racks delivers secure, durable rear access for valuable equipment. Crafted from heavy gauge steel and finished in a rugged black powder coating, this rear door stands up to the rigors of daily rack room usefrom high traffic studios to busy data closets. Designed to fit standard 19" rack frames, the door integrates seamlessly with 44 RU
Engineered for professional AV, IT, and data-center environments, the Middle Atlantic Solid Rear Door for 44 RU Racks delivers secure, durable rear access for valuable equipment. Crafted from heavy-gauge steel and finished in a rugged black powder coating, this rear door stands up to the rigors of daily rack room use—from high-traffic studios to busy data closets. Designed to fit standard 19" rack frames, the door integrates seamlessly with 44 RU configurations, preserving a clean, professional appearance while delivering enhanced security and streamlined cable management. Whether you're protecting servers, AV gear, or critical network appliances, this solid rear door provides a trusted barrier against tampering and incidental bumps, all while maintaining easy access for maintenance and service.
- Durable steel construction with reinforced hinges and a robust latch system provides long-lasting security and dependable rear access in demanding environments, from broadcast studios to enterprise server rooms.
- Precisely sized for 44 RU racks with a height of 78.1" and a width of 19.4", the door aligns perfectly with standard rack rails, ensuring a tight, uniform look and reliable attachment without gaps.
- Black powder-coated finish offers superior corrosion resistance, scratch resistance, and easy wipe-down maintenance, preserving a professional, matte appearance even in cluttered or dusty environments.
- Easy integration with existing Middle Atlantic racks and standard 19" mounting rails; no special adapters required, enabling quick retrofits and minimal downtime during upgrades or reconfigurations.
- Enhanced security and organization at the rear of the rack—reduces tampering risk, provides a cleaner cable pathway, and helps protect back-of-rack components, PDUs, and fiber or copper runs from accidental contact.
Technical Details of Middle Atlantic Solid Rear Door, 44 RU Racks
- Material: Steel
- Finish: Black powder coat
- RU compatibility: 44 RU
- Exterior dimensions: 78.1" H x 19.4" W x 1.2" D
- Mounting compatibility: Standard 19" rack rails; designed for Middle Atlantic 44 RU enclosures
How to install Middle Atlantic Solid Rear Door, 44 RU Racks
Install this rear door quickly and securely by following these practical steps to ensure a proper fit and reliable operation:
- Power down and unplug all equipment inside the rack; confirm there are no loose cables creating tension on rear panels.
- Open or remove the existing rear panel or door to access the rack’s mounting rails and gaining clear access to the frame.
- Align the Solid Rear Door with the rack frame, ensuring the mounting holes line up with the standard 19" rack rails used by Middle Atlantic 44 RU configurations.
- Attach the door using the factory-supplied hardware or the rack’s existing screws; tighten each fastener in a diagonal sequence to avoid warping or misalignment.
- Close the door, verify smooth hinge operation, confirm the latch engages securely, and re-route cables so they do not impinge on the door’s edge or interfere with closing motion.
Frequently asked questions
- What is the primary purpose of the solid rear door? It provides secure rear access for 44 RU rack installations, protecting sensitive equipment and cabling from tampering and incidental contact while maintaining a professional aesthetic.
- What are the key dimensions and compatibility notes? The door is 78.1 inches tall, 19.4 inches wide, and 1.2 inches deep, designed to fit standard 44 RU racks with 19" mounting rails, specifically aligning with Middle Atlantic 44 RU enclosures.
- Will installing this door affect airflow within the rack? Being solid, the door is primarily focused on security and rear access. If airflow is a priority in a hot environment, consider pairing with vented or perforated panels at other points of the enclosure to balance cooling and protection.
- Can I retrofit this rear door to other brands? The door is optimized for Middle Atlantic 44 RU rack systems and standard 19" rails; compatibility with non-Middle Atlantic brands depends on rail positioning and mounting hole alignment, so verify measurements before installation.
- How should I maintain the door’s finish? Wipe with a soft cloth and a mild cleaning solution as needed; avoid aggressive abrasives to preserve the powder coating and avoid scratching the surface.
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
4.0 ★★★★★
Based on 2014 reviews
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Product Reviews
★★★★★ 5
Great product!
Style: 30 sqft
I can say this product makes a huge difference with road noise and is cleaner and easy to work with when applying compared to other mats that cost about the same price.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Very heavy and thick
Style: 30 sqft
I purchased mini brands of sound ending and this is by far the heaviest sound deadening I've ever ordered. I'm not installed yet but I have a good feeling that is going to work exceptionally in blocking sound. If weight is a concern for you I would recommend a lighter product however if sound quality and a quiet ride is your priority this is the one for you.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Siless Hybrid 3-in-1 - Far Exceeded my Expectations!!!
Model: SLH20025
I recently installed the Siless Hybrid 3-in-1 sound deadening mat in my vehicle, and I’m genuinely impressed. For just $80 for 25 square feet, this product delivers performance that rivals materials costing twice as much — and with far less hassle. If you're on the fence......Just buy it! You will not be disappointed.
Easy to Install: Unlike traditional sound deadening products that are stiff, sharp, and temperature-sensitive, this mat is soft, flexible, and easy to work with. I cut it cleanly with regular scissors and pressed it into tight spaces using just my fingers, so if in you don't have a roller or install tool, a good pair of scissors and your hands can get the job done. With other brands like Dynamat, the aluminum layer often leaves micro cuts on your hands and tears up your fingertips, but Siless does not due the acoustic layer being on top and above the aluminum layer that holds the butyl layer. So, it's very easy on your hands.
Even in cooler temperatures (around 50°F), I had no trouble applying it but it goes on better heated. If warm outside, I would leave the entire box out in the sun for at least 30 minutes when it's warm or heats it's very pliable and easy to mold. Make sure its where you want it because once applied it's not ever falling off. and it became even more pliable and easy to mold. No heat gun, no mess — just straightforward application.
I installed 40–50 square feet throughout the interior, covering everything except the headliner and the flooring forward of the rear seat. The difference in cabin noise is astonishing. I can turn my radio up concert loud with gut-punching bass, and from outside the car, it sounds like a factory sound system at mid volume. I was blown away by how well it contains sound — both inside out and outside in.
My exhaust is pretty aggressive and now is barely audible from inside the cabin. While driving, it almost sounds like a stock factory setup. The Siless matting actually changed the driving experience and feels refined.
If you're skeptical about sound deadening gimmicks, I get it, but this is the first product I've used and when I needed more, I went Stright to the 3 in 1 Hybrid matting and purchased it again. I love researching before buying and that's very uncommon for me to do.
Note: Proper installation is key, and it does take time and patience. But if installed correctly and in the right places, it works better previously used from paint-on sound deadening to Dynamat.
Update Nov, 2025
After using it this in 4 separate vehicles now. I feel the Siless’s 3 in 1 Hybrid has nailed it for best budget deadener that is better than dynamat extreme in performance and installation
Protip: buy a roll of 2-3” aluminum tape and tape the seams. After trimming the edges tend to very sticky between the panels. I ran a strip of aluminum tape over the seems to create a better seal and true moisture
I used it on four vehicles now and have I have not been paid to review and purchased every order myself.
3 in 1 Hybrid deadener by Siless is the best all around easy to apply sound deadner period!
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Reviewed in the United States on September 29, 2025
★★★★★ 5
Top quality
Model: SLH20025
This Siless Hybrid 3-in-1 sound deadening mat is easy to work with and feels high-quality. The butyl material is thick and pliable, making it simple to cut and fit into doors, floors, or panels.
After installation, road noise and vibrations are noticeably reduced, and it also seems to improve the overall cabin feel. No bad smell.
At 25 sq ft per roll, it’s a good value for anyone looking to dampen noise and improve car acoustics. Overall, a solid, effective option for automotive soundproofing. Used on a Fiesta ST.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Made a big improvement in cabin noise—highly recommend
Model: SLH20025
Siless Hybrid made a huge difference in reducing noise in the floor of my truck cabin. In some areas, there was basically just bare sheet metal between the inside and outside, so adding this really helped the truck feel more solid and noticeably quieter on the road.
I used Kilmat on the doors, and honestly I wish I had used Siless Hybrid there too, but it was too late by the time I realized the difference. This material is very sticky, easy to cut, and simple to apply, which made the install pretty smooth.
Just a heads-up: the tacky side gets messy and will bond to clothing really easily, so be careful during installation. Overall, I’d definitely buy it again—great product with real results.
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Reviewed in the United States on December 2, 2025