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Montech

MONTECH AIR 903 MAX High-Airflow E-ATX Mid-Tower PC Case, 4 Fans, Black

Based on 472 reviews
Condition: New
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$79.98
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Oct 31
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At a glance

Condition
New
Size
Air 903 Max Black
Dimensions
18.8"D x 9"W x 19.4"H
Weight
9.14 kg
Color
Black
Material
Tempered Glass
Case Type
Mid Tower
Warranty
1 year
Works with
Extended ATX, Mini ITX, Micro ATX, ATX motherboards; Coolers up to 180mm in height; Power supply units up to 240mm in length; Radiators of various sizes; Graphics cards up to 400mm in length and 190mm in width

Features 5

  • Play Harder Without Fearing the Heat - This high-airflow mid-tower gaming PC case uses a ventilated mesh front panel so the system takes in the airflow it needs, and the 478 x 230 x 493 mm chassis leaves room for demanding parts.
  • Start With Four Fans Already Fitted - Three 140 mm HP140 ARGB PWM fans sit at the front and one 140 mm PWM fan at the rear, giving an airflow-ready starting point with front lighting and fan speed you can tune for cooling and sound.
  • Choose the Cooling You Want - Radiators up to 360 mm mount at the front and on top, so a substantial liquid-cooled or air-cooled build can be planned without the chassis dictating the cooling path or limiting later changes.
  • Upgrade With Confidence, Not Compromise - This case supports E-ATX, ATX, Micro-ATX, and Mini-ITX motherboards along with graphics cards up to 400 mm, so choosing higher-performance parts does not mean outgrowing the chassis on the next upgrade.

Description

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. 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. 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. Supports E-ATX and SSI-EEB form factors, providing a seamless installation experience with pre-punched mounting holes and cable routing holes. 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. 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.

Specs 32

Brand Montech
Motherboard Compatability Extended ATX, Mini ITX, Micro ATX, ATX
Case Type Mid Tower
Recommended Uses For Product Gaming
Color Black
Material Tempered Glass
Power Supply Mounting Type Rear Mount
Cooling Method Air

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

Great Case!
Size: Air 903 Max Black
Pros: Super easy to build in. HDD Cage comes out with just thumb screws giving you the whole basement for power cable management. Tons of clearance in the front and top for any radiator with 120mm or 140mm fans. My Xfx Speedster Swft 319 rx6800 graphics card fits with tons of room to spare. Four 140mm fans are included (3aRGB, 1 black) as is a control hub. Magnetic dust screens are awesome and air flow is exceptional. Both the glass and metal sides attach with captured thumb screws so you can't lose them. All of the expansion slots in the back have thumb screws as well. Build quality and finishes are above average for the price range. Cons: Included fans are on the louder side, but tolerable if you set up a custom fan curve. Only average room for cable management in the back. Power and front I/O are on the side that you would normally face away from you. Definitely not deal breakers though. Bottom Line: Definitely the budget king! It has everything most people need, tons of space, easy to build in, excellent airflow, 4 included fans, and it looks good. You can't do better without spending twice as much. ... show more
Reviewed in the United States on September 5, 2024 by Teddy West Side
Excellent case, a bit loud but has great features.
Size: Air 903 Max Black
I love how this looks and how easy cable management was. Having a PSU shroud was amazing for hiding excess cable. The front fans are powerful, but a little loud when they ramp up. The RGB is nice and functions well. It fits my large GPU just fine, and had plenty of space for AIO coolers. This is one of the easiest cases I have built in and I would gladly buy this again for future builds ... show more
Reviewed in the United States on October 25, 2025 by CC
Room to move, room to grow!
Size: Air 903 Max Black
Nice, roomy mid Tower. My 2-year-old gaming computer lost its life to a faulty power supply. Buying OEM parts was not only very expensive, but not really feasible because I would be in the same trap that I was in before. For the first time ever in my life of dealing with and buying pre-built computers for 35 years, I built my own. I chose this montech case and it was a dream to build in. Plenty of room, and no issues. I would buy this again in a heartbeat and I would not have any problems with recommending it. ... show more
Reviewed in the United States on July 11, 2026 by tuneman59
Really good case
Size: Air 903 Max Black
Review Image by Aidan
Had it for a few months now and I still think it's great. The design is very professional and clean looking which is perfect for me since I'm not a fan of the aggressive angular "gamer" aesthetic. The RGB is fun to have though, and speaking of those fans, they move a lot of air. I recommend setting up a custom fan curve in your BIOS, as it's a bit loud by default, but you can take the power down to completely silent levels and it'll still keep everything perfectly cool. I've had to open up this case quite frequently and I've yet to encounter any issues with the build quality. Everything is accessible. The only drawback is that it is very big. In my particular build, there's a good 5 inches of unused space at the front of the case. I'm sure it's there for some reason or another, but if you're like me and don't have a bunch of bulky storage drives or a big liquid cooling radiator or something, it's not necessary. Anyone who's trying to save desk space is probably not looking at this case anyway though. All in all I don't think I could've found anything better. ... show more
Reviewed in the United States on June 2, 2026 by Aidan
This Case is a Steal for the Price
Size: Air 903 Max Black
If you can get this case for around $75 or less, I think it is an absolute steal. I have done 3 builds in them and I have enjoyed it. I love the included 3 RGB fans and 1 non RGB fan, for a total of 4 included fans! For this price, it makes it an amazing option especially when trying to adhere to a certain budget. I love how the front is not blocked off by glass so hardware is able to breathe, and it makes maintenance cleaning very easy. It has 2 rubber gromets on the right side of the motherboard, and well placed cutouts at the bottom and top of the chassis, making cable management easy. Just be aware when purchasing it is on the larger side. when compared to other Mid Tower cases. All the fans that are included are routed into a pre installed fan and RGB hub on the back making plugging in other fans and RGB accessories much easier. Overall this case is awesome, you cannot really beat it at this price since, in my experience, it has zero compromises. ... show more
Reviewed in the United States on January 6, 2025 by Ammar Ghaswala
Great Case for a Great Price
Size: Air 903 Max Black
This is an awesome case! Built my first computer using this case ans its very well made for its price. Has lots of areas for cable management. My only real complaint is some of these areas are at a bit of a weird angle that makes pushing cables through and seating them a bit challenging. Very quiet in my option, fans are not loud at all. ... show more
Reviewed in the United States on August 19, 2026 by Alex T.
A great case for airflow
Size: Air 903 Max Black
Review Image by spartaman
Great mid-tower case for the looks and value. It fits my B850 ATX MB with no issues. This case style has been done many times from different companies but it just works. Build material is solid. I came from an older smaller Bequiet case that didnt have great ventilation or airflow and this case is totally the opposite.. The 3 included argb 140mm fans in the front as well as 1 regular in the rear is a plus. I have a 360 AIO mounted at the top which cleared with no problems. I am so glad I picked this up with zero regrets. ... show more
Reviewed in the United States on December 10, 2025 by spartaman
Tons of space for airflow, more than most mid size towers
Size: Air 903 Max Black
This case is MUCH larger than I expected for a mid tower, plenty of space for airflow. I really like that you can open the backside panel to work behind the motherboard for all of the cabling, tons of room, very clean! I also didn't realize it came with fans too and there's a header on the backside where the fans, topside USB ports and other peripherals plug into which use one of your SATA power cables. Perhaps this is the standard now, and if so I like it! I've built about 10 personal PC's throughout my life and this has been far and above the best experience I've ever had installing all of the hardware in the case. This case far exceeded my expectations and am blown away at the quality at this price point. ... show more
Reviewed in the United States on March 31, 2025 by Christopher Carter
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