NZXT H9 Flow Dual-Chamber ATX Mid-Tower PC Gaming Case – High-Airflow Perforated Top Panel – Tempered Glass Front & Side Panels – 360mm Radiator Support – Cable Management – Black
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Size: Non RGB Fans
Style: H9 Flow
Color: Black
Features
- CLEAR VIEW: Seamless glass across the front and side panels gives your builds components the undivided attention they deserve.
- HIGH-PERFORMANCE AIRFLOW: Perforated top and side panels direct filtered air through the case to cool down components and enhance performance.
- DUAL-CHAMBER DESIGN: Cables, storage, and PSU are separate from other components to maintain a clean look and maximize airflow to the GPU.
- SIMPLIFIED BUILDING: Spacious interior with intuitive cable management, a dedicated SSD wall panel, and removable top and side mounting brackets.
- ENORMOUSLY COOL: Supports radiators up to 360mm in the top, side, and bottom panels. Fits up to 10 x 120mm fans, or 6 x 140mm fans plus 1 x 120mm fan.
Description
The H9 Flow CM-H91FB-01 is designed to cool o powerful GPUs with its expansive thermal capabilities, featuring a ten fan capacity and numerous 360mm radiator mounting options. A perforated top panel takes cooling even further, and a unique wraparound glass design with a dual-chamber layout is the perfect showcase for premium components.
Brand: NZXT
Motherboard Compatability: ATX
Case Type: Mid Tower
Recommended Uses For Product: Gaming
Color: Black
Material: Tempered Glass
Power Supply Mounting Type: Bottom Mount
Cooling Method: Air
Model Name: H9 Flow
Fan Size: 120 Millimeters
Supported Motherboard: ATX
Case Type: Mid Tower
Power Supply Mounting Type: Bottom Mount
Cooling Method: Air
Fan Size: 120 Millimeters
Total Expansion Slots Quantity: 7
Total USB 2.0 Ports: 2
Total Usb Ports: 2
Other Special Features of the Product: Built In Fan
Hard Disk Form Factor: 3.5 Inches
Internal Bays Quantity: 8
Compatible Devices: Motherboard
Number of Fans: 3
Light Color: Multicolor
Antenna Location: Gaming
Brand: NZXT
Model Name: H9 Flow
Manufacturer: NZXT
UPC: 810074842488
Global Trade Identification Number: 88
Mfr Part Number: CM-H91FB-01
Model Number: CM-H91FB-01
Warranty Description: 2 Years
Color: Black
Enclosure Material: Tempered Glass
Item Weight: 5 Kilograms
Item Dimensions D x W x H: 23"D x 15"W x 23"H
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: Non RGB Fans
Style: H9 Flow
Color: Black
The NZXT H9 Flow is hands down one of the best cases I’ve ever built in. The dual-chamber design makes cable management incredibly easy and clean. The airflow is excellent, especially with the perforated top panel — my temps stay low even under load. The tempered glass front and side panels show off your build beautifully, and there’s tons of room for fans or a 360mm radiator. It’s well thought out, sturdy, and looks amazing on my desk. If you're building a high-performance rig, this case is 100% worth it.
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Reviewed in the United States on July 18, 2025 by Blake
Size: Non RGB Fans
Style: H9 Flow
Color: Black
The NZXT H9 Flow is an outstanding dual-chamber case. Cable management is a breeze thanks to the back compartment, and the perforated top panel provides excellent airflow. Tempered glass on all sides looks incredible with RGB builds. Installation was straightforward and the build quality is top-notch for the price.
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Reviewed in the United States on March 25, 2026 by Tom Kansas City
Great case, pretty to look at and spacious enough for the latest hardwares including the newest 5090 cards. Airflow feels amazing, comes with 4 fans which is enough to make my pc to regulate temperature, with obvious additional parts like a cpu water cooler and radiator. My only issue which isn’t a huge problem is the center piece for cable management makes a right squeeze for my GPU, but that can easily be fixed by removing that one piece by unscrewing 2 screws. F panel is also really nice and easy to install, rather than the old system with multiple tiny plugs for power, reset and LED, it’s all one simple plug, saves a bunch of time and makes cable management so much easier! 9.5/10
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Reviewed in the United States on February 27, 2025 by John Cordova
Size: Non RGB Fans
Style: H9 Flow
Color: Black
I’ve had this for 7 months now, and I think it’s time I finally write a review. I get compliments on this case ALL. THE. TIME. My setup looks soooo clean now and this case really ties it all together. There’s so much space for airflow and cable management, and the size of the case made it easy to get in and assemble. I’m fine with the fans it came with, and haven’t bothered swapping those out because it stays pretty quiet and stays cool. I love the magnetic mesh top that pops off for easy cleaning in-between deep cleanings, and the mesh tray at the bottom that slides out. I love how many configurations there are for airflow or for your radiator, and I LOVE how the PSU gets hidden in the back alongside the cables. Maybe I’ll update this review with a picture of my cable management, because I’m really happy with that too. I love that the windows are glass panes instead of plastic/acrylic that might scratch easily. Everything about this case just feels high quality.
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Reviewed in the United States on July 7, 2025 Reviewed in the United States on July 7, 2025 by Harte
Size: Non RGB Fans
Style: H9 Flow
Color: Black
The Dual chambers of this case make building in it that much more convenient cause of how spacious it is inside. It can properly fit a few different motherboard sizes, including Mini-ITX, Micro-ATX, and ATX with some reporting E-ATX as well after removal of the cable management tray. A couple standoff screws I had to remove took some fiddling with a wrench but that's to be expected. The cable management is on another level, there are useful velcro straps in the rear chamber that go up and around the top of the case, with all of the case's front I/O Input cables and stock fans' cables routed through them already. The build quality of the case itself is awesome to behold, it reminds me of a fish-tank, but it's for your computer! It definitely has some heftiness to it, the tempered glass panels have a black border around 2/3rds of the panel, but it's pretty easy to get your fingerprints on them at one point before putting it all together, so have a lint-free micro-fiber cloth at the ready and maybe some Isopropyl alcohol. When it all comes together, an Intel i9-12900k sits around 35C at idle during the spring time thanks to the NZXT Kraken 360mm AIO liquid CPU cooler. The GIGABYTE Aorus GeForce RTX 5070 Master sits near 32C at idle with help from three 120mm bottom intake fans. I also ran a few recently released or demanding games at the highest settings possible at 1440p at a max of 165FPS to monitor how temps were: Marvel Rivals - Temps were under 58C and CPU temps hovered around 45 capping at 49C in the Practice Range area at high GPU/CPU loads. The Elder Scrolls IV Oblivion Remastered - GPU at 98% load and temps didn't exceed 58C while taking down the yellow team in the arena and traversing Cyrodiil. CPU temps were consistently under 55C as well. Throne and Liberty - CPU Temps hit 67C max during shader optimization and GPU was mostly around mid 50s, capping at 58C while running around in shapeshift form. CPU didn't exceed 58C during normal gameplay either. Call of Duty Warzone: CPU max temp was 62C and GPU's was 59C. God of War Ragnarok: GPU and CPU temps didn't go above 60C during multiple Valhalla runs. My one caveat with this case: The side panel can be tough to get properly seated after opening. The two glass panels meet and there's a bit of a gap, which is normal, especially since it comes shipped with a piece of cardboard between the two, but I noticed the gap was slightly bigger than when it shipped, and that the bottom circular shaped rubber notches weren't properly inserted. I think I ran into this issue during my first attempt to re-insert the panel cause I had the case vertical. I then turned it on the perforated mesh side of the case and figured out the method that worked for me to get the panel back in properly. Solution to re-insert glass side panel: I had to basically angle the tempered glass panel towards the bottom to fit the circular notches at the top correctly, then lower the panel to the bottom of those lower notches while pushing the top of the panel inwards so that the topmost spherical notches insert into the corresponding circular cutouts there. (Doing all this while avoiding leaving any fingerprints and smudges on the inside of the panel can be tough!) tldr: Great case to build with, display, and admire! One caveat: the glass side panel is a bit tough to re-insert.
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Reviewed in the United States on April 29, 2025 by Avon
The NZXT H9 Flow (2023) is a great case that rivals other high-end PC cases in my opinion. My experience building with NZXT cases has been nice, especially this case. They all feel high quality. There is enough space for cable management, and it is easy to work with. The view of the PC after it is done looks great with the glass side and front. There is space for 10x total fans: 3x fans at the top, 3x fans on the side, and 3x fans on the bottom, plus space for a single fan at the back. There are holes on the top, bottom, back, and whole side of this case, with dust filters included. My PC stays cool. For storage, there is a bracket that swings out and holds 5x 2.5" drives on the inside. There is a hard drive bracket that holds 2x 3.5" drives and 1x 2.5" drive. I think it would be nice if there were space to add one or two more 3.5" drives, though it is okay and should work for most people. Although with the AIO setup and this case, the PC is now heavy and not very portable. The top front I/O has: Power Button 2x USB 3.2 Gen 1 Type-A 1x USB 3.2 Gen 2x2 Type-C (20 Gbps) 1x Headset audio jack Overall, I really like this H9 Flow PC case, the way it looks and to build with it.
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Reviewed in the United States on August 22, 2025 by Andrew G
Size: Non RGB Fans
Style: H9 Flow
Color: Black
Pros -Good airflow -Simple yet elegant design -Good Lian Li alternative features -Great tool-less latch design for the panels for easy access. -Filters are easy to clean and to access -Preinstalled mounts for ATX motherboards -Lots of room to work with. Cons - No HDD indicator LED light - Came with 3pin 120mm Fan no PWM fans -120mm rear fan instead of 140mm -Can only fit 2 140mm fan on top and bottom instead of 3.
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Reviewed in the United States on July 7, 2024 by Juju
Size: Non RGB Fans
Style: H9 Flow
Color: Black
I upgraded to this case from the NZXT H510 Elite, and I have to say that it is a huge improvement. The dust panels are super easy to remove with most of them being magnetic and one of them being very easy to slot into. There is ample space for cables making it relatively easy to cable manage and build in. The airflow is also good but that is to be expected from a larger case. This is a small detail but the LEDs on the power button don't flash like it did on my previous case which got annoying at times. The ports on the case are also higher quality than my previous case. Overall, this case looks amazing and has many great features. I would avoid this case if you are constantly on the move due to its larger form factor (opt for a mini-itx case instead) or if the price is outside of your budget, but, otherwise, I would recommend it for anyone.
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Reviewed in the United States on December 18, 2023 by Max