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
Number of USB 2.0 Ports: 2
Brand: NZXT
Series: H9 Flow
Item model number: CM-H91FB-01
Item Weight: 11 pounds
Product Dimensions: 23 x 15 x 23 inches
Item Dimensions LxWxH: 23 x 15 x 23 inches
Color: Black
Computer Memory Type: DIMM
Manufacturer: NZXT
Date First Available: January 12, 2023
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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
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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: RGB Fans
Style: H9 Flow RGB+ (2025)
Color: White
Absolutely beautiful case. Lots of space to build in and fit any GPU you could want. The back chamber makes it super easy to manage wires (or avoid managing wires) and gives plenty of space for the PSU to breathe. The fans are a little noisy but very clean and effective. The paneling locks in very firmly even without the thumb screws. Fitting a 420mm radiator inside was no problem. Will be building in it again
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Reviewed in the United States on January 18, 2026 by Dylan banks Dylan banks
Size: Non RGB Fans
Style: H9 Flow (2025)
Color: Black
reviewing the NZXT H9 Flow (2025) This is hands down the best case I have ever used. I have been building my PCs for over 40 years, and while the Corsair cases have been really well made easy to work on, the one my RTX 5090 is in was too densely packed to allow enough air flow. I had my system reboot several times while playing Cyberpunk 2077 because the GPU was running too hot. I decided to get the NZXT case because it has so many fans and lots of space inside for air to flow through. Installing a new motherboard was made easier because there is a little nub for the middle hole in the motherboard that makes it line up to the opening for the ports. There's enough room to top mount a water CPU cooler without the fans overlapping the board. The power supply sits on the side instead of the bottom, and that makes running cables much easier. There's lots of space behind the motherboard for hiding and organizing those cables too. Because the case fans are angled and to the side, my mammoth GPU has plenty of room around it for air flow. The only quibble I have is the fact that there is nowhere to put a GPU support. I had to settle for making the screws holding the GPU to the case very snug. I'm obsessive about fan noise, so I am seriously considering replacing the fans that came with the case with some Noctua silent fans. They aren't bad, but they are louder than my Be Quiet! CPU cooler radiator fans which run less than 25 db most of the time. Their even louder than the 5090's fans, which run quietly even for games with intense graphics. Highly recommended for builders.
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Reviewed in the United States on February 15, 2026 by Morris L.
This case while on the pricey end, is one of the best cases I’ve used, it’s sleek, modern, and spacious. While I wouldn’t recommend this case to a person who wants to build something small and more performance based, I would definitely recommend this case to someone who wants to build something aesthetically pleasing that stands out. The potential for this case is amazing and it’s paired with how visually appealing it is, not to mention the room for cable management due to the case’s dual chamber design. This would allow you to just throw the idea of cable management out the window if you don’t care for it. The case isn’t loud considering that it’s surrounded by 3 glass panels, the airflow is as great as you’d expect and it performs great in both the cooling spec and the lighting spec when it comes to aesthetics. The case itself isn’t that heavy, when you first get the package it may seem heavy but that’s mainly due to the glass panels, once removed though the case is basically as light as a feather, this may vary depending on the person, but it isn’t a heavy case regardless for its size. The case is relatively easy to use as well, for first time builders or people who are new to pc building it may be a bit difficult because they’re new to the idea of cable management and such, but to the relatively experienced or knowledgeable builder it’ll be a breeze. Once again, this case is such a perfect product when it comes to aesthetic appearance and lighting inside of the case, it isn’t too much but it just works in the right way, if you have the money I would definitely recommend this case especially right now considering the mark down compared to the previous price which was $200! Seriously though this is hands down the best case I have ever worked with, I couldn’t recommend this case enough due to its current price and all the extra things you get for the price, but only buy it if you’re willing to pay a bit more for a case, there are other cases out there that are cheaper and while they lack some of the things that the H9 does, they’re still great cases.
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Reviewed in the United States on August 24, 2024 by Darien Andonaegui Darien Andonaegui
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