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About Montech
MONTECH was established by Telon in 2016, which focuses in the PC gaming market. MONTECH is quite successful in the Taiwanese market. It is now seeking to expand to the world. There are four pillars of our core values, we abbreviate them to four simple letters, SSEC. Simplicity, Safety, Easy To Use, and Customer-Trust. SSEC is how we do everything, like designing products, manufaturing, commuicating with customers, it is our deepest values here in Montech.
AIR 903 MAX
Ultra-Cooling Mid-Tower with Max Capacity
- A Mid-Tower Case Designed for both Air and Liquid Cooling
- 360mm Radiator Support at the Top and Front
- 180mm Height for a Top-Class Air cooler
- Innovative Mesh Front Panel for the Best Cooling Performance
- High-Performance HP140 PWM Fans
- Support for Vertical GPU Mounting*
- Ample Space for Flagship 4090 Graphics Cards
- Spacious Cable Management routes
- USB TYPE-C Port and 2x USB3.0 Port
Classic Reversion – Epic Evolution
Introducing the all-new Montech AIR 903 series - the ultimate upgrade for discerning PC enthusiasts. Building upon the immense success of the first-generation AIR 900 series, Montech has redefined excellence with this comprehensive enhancement.
Classic Reversion – Epic Evolution
Introducing the Montech AIR 903 series - the ultimate upgrade for PC enthusiasts. It offers superior aesthetics, unparalleled airflow, meticulous attention to detail, and exceptional compatibility.
Get ready for the best mainstream case of 2023.
True E-ATX Compatibility and Seamless Installation
Supports E-ATX and SSI-EEB form factors, providing a seamless installation experience with pre-punched mounting holes and cable routing holes.
Maximize Airflow, Optimize Performance
Experience the innovative AIR 903 case with a metal front panel featuring a staggering 51% ventilation rate.
It maximizes airflow, delivering superior thermal performance and an ultimate gaming experience.
Limitless Cooling Potential and Customization Freedom
Offers maximum airflow and versatility with a generous clearance for CPU tower coolers, support for 360mm AIO coolers at the front and top, and the ability to install up to 9 fans.
Mr. Fox
Reviewed in the United States on March 25, 2025
What is Great:This Montech AIR 903 MAX case is built well and looks good. It offers excellent value and is favorably priced. Overall, I do like it and recommend it. Air flow is good. The 140mm fans (four included) are pushing more air than I imagined they would and run very quiet. The PWM fan/RGB hub is a nice feature that works well. I like the included lighting control button. It sucks to have to install trashy OEM bloatware for lighting control and with this case you do not find yourself needing to do so. Leaving the ARGB unplugged from the motherboard headers allows you to use the button on the case. This case is a great option for those using a basic AIO for the CPU or air cooling.What Can Be Improved:The rear I/O panel 140mm fan is not RGB like the rest. That is silly and unfortunate.The space above the motherboard and behind the motherboard tray needs to be greater. Making the case 1.5 to 2.0 inches taller and about an 1.0 inch or so wider would remarkably improve the usefulness to a broader audience.Above the motherboard it only has enough room for thin radiators and push fans. No way you can install fat radiators and push/pull. That sucks, but I understand "normal" is their target market and gamerboy AIOs is what 99% of their customers are going to be installing. So, since I am using a gamerboy AIO for this application it's OK. It would NOT be OK with a custom loop. There is not enough space for a custom loop to be accommodated comfortably.Behind the motherboard tray it would be nice to have an extra 25-30mm of space. I got the cable management done in a way that is aesthetically acceptable without a bulge in the side panel, but man it sure was tight. My PSU is an RM1200x SHIFT and there is barely enough space for the modular cables.
Ethan I.
Reviewed in the United States on March 25, 2025
Amazing case! Easy to clean, incredibly quiet, cools the components very well! Easy to run cables through, plenty of space for drives, LEDs are pretty and bright, and also protected all the components from the basement flooding! Easy to open and close too!
emdiff
Reviewed in the United States on July 23, 2023
It’s a great package for the price and I would highly recommend it. I got the black 903 MAX version for 70$ on sale, and at that price it simply cannot be beat. The construction of the case feels solid and does not feel cheap, perhaps a slight notch below the 4000D’s overall sturdiness, but still very good.You get nice front I/O including an RGB button, reset SW, premium power button with metal, and USB type C (which I think is the biggest selling point.The cable management in the case is overall very good. I have worked with the 4000D and it is just as good as that. You have included velcro cable ties and a decent amount of tie off points. The included fan hub in the back is an absolute lifesaver for cable management and all of the fans and what not are already connected to it. The only thing you really need to connect from it is the SATA power 6 pin from your PSU to power all your fans.It’s helpful be cause it completely mitigates the amount of fans you have to awkwardly try to plug into your motherboard, it also just really cleans up the rear cable management and makes it much easier to understand which cables go where.The only real cables you have to manage are: your USB headers (type C and A), your very small front panel pinouts (Reset SW, Power SW, HDD LED, etc.), two other small cables (HD audio and and ARGB header), then just your main power cables (24 Pin PSU, 8 pin CPU, 8 Pin GPU/VGA).I did have two minor gripes with the case, though, that I want other customers to be aware of and perhaps Montech themselves.I was using a Micro ATX motherboard in this case and when I went to put the motherboard in the case and had started to screw it down, I finally noticed that the bottom 2 stand-offs were never installed. So I had to take back out the motherboard and install the 2 (3 provided) to fix the issue. So beware that you very well may have to install the standoffs before you put in your motherboard.Second gripe is quality control. I know that I have heard multiple people complain online about how they received cases from Montech that were slightly damaged/defective. On JaysTwoCents review of this case, he also received on with a pretty noticeable dent. Similar to Jay, I also received a small contour in the metal toward the back left of the case. If you looked at if from the right angle, you could tell that the contour/angle was not intended. So I am not sure if these cases are being damaged in shipping or if it is just Montech’s factory QC that is leading to these f defects.But overall, I am happy with the case and am not returning it because the damage was still very minor.I would provide pictures of my build, but I don’t want to give Amazon access to all my photos 🙃
Matthew
Reviewed in the United States on November 20, 2023
This is my first ever gaming PC build and I'm impressed by the quality of this case for the price. As a beginner, I was able to assemble a gaming PC on my own without any help. Just online research and patience.The tower is bigger than I thought it would be, but I'm getting used to its size. I really love the dust filters on the top and bottom, really helps with dust management. I also love how all the fans come preinstalled and already plugged into a fan controller. Which made building as a newcomer so much easier. The fans on the front can be heard when the room is quiet, but if you have a box fan in your room like I do, it overrides the noise from the PC. The fans aren't loud, but don't expect complete silence.The air flow in this case is amazing. Combined with the air cooler for the CPU, I'm getting 24 C idle temps. The airflow is so strong that you can see pieces of dust being sucked up against the front panel, which I wipe off with my hand every now and then. It filters out the thicker pieces of dust from getting sucked into the system.The only complaint I have is I couldn't figure out how to mount the hard drive, even while looking at the manual. I can't fit the bent shaped SATA cable into the hard drive so I had to use the other end of the cable.My other complaint is that some of the front panel cables that need to be inserted to the motherboard are lost in the bundled up wires but I eventually worked them out and got them through the grommet.My last complaint is that the manual doesn't explain at all that the fan controller is included or what it is. As a newcomer builder, I had no idea what it was or what was connected to it. I only learned what it was through videos of people building their PC. But once I learned that it's a fan controller, I appreciated it being there and already setup.
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