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NZXT

NZXT H3 Flow – Micro-ATX PC Case – Optimized Airflow – Includes 1 x 120mm Rear Fan – Supports Full-Sized GPUs – Fits 280mm Front, 240mm Top Radiator – Back-Connect Motherboard – Black

  • Based on 163 reviews
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Availability: In Stock.
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Arrives Monday, Nov 17
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Size: H3 Flow (2025)


Style: Non RGB Fans


Color: Black


Features

  • SPACE-SAVING SIZE A space-efficient micro-ATX chassis that accommodates high-performance components without compromise.
  • HIGH-AIRFLOW DESIGN Ultra-fine steel mesh on the panels and PSU shroud maximizes airflow while effectively filtering dust.
  • EXTENSIVE COOLING SUPPORT Supports up to a 280 mm radiator at the front, a 240 mm radiator at the top, and up to seven fans for powerful cooling performance.
  • FULL-SIZE GRAPHICS CARDS Fits GPUs up to 377 mm (without front fans), 352 mm (with front fans), and 317 mm (with front radiator and fans installed).
  • PRE-INSTALLED REAR FAN Comes equipped with a F120Q (CV) fan at the rear for efficient exhaust airflow right out of the box.

Description

The H3 Flow (CC-H31FB-01) is a space-efficient micro-ATX PC case delivering exceptional airflow and versatile component compatibility. Designed for optimal cooling, the mesh panels and ventilated PSU shroud keep high- performance components running smoothly.

Brand: NZXT


Motherboard Compatability: Micro ATX


Case Type: Mid Tower


Recommended Uses For Product: Gaming


Color: Black


Material: Alloy Steel


Power Supply Mounting Type: Bottom Mount


Cooling Method: Air


Model Name: NZXT H3


Item Weight: 4800 Grams


Number of USB 3.0 Ports: ‎2


Brand: ‎NZXT


Series: ‎NZXT H3


Item model number: ‎CC-H31FB-01


Item Weight: ‎10.58 pounds


Product Dimensions: ‎15.75 x 15.35 x 9.06 inches


Item Dimensions LxWxH: ‎15.75 x 15.35 x 9.06 inches


Color: ‎Black


Manufacturer: ‎NZXT


Date First Available: ‎May 20, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

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

    • Best Matx case I could find!
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Review Image by Jacob Stvartak Jacob Stvartak
First micro ATX case build. Great for the price with a lot of airflow. Dust does catch on the front which can look a little dirty but it brushes away. Great size for my son’s desk which is smaller. Build quality was top notch from nzxt!
Reviewed in the United States on October 3, 2025 by Jacob Stvartak Jacob Stvartak
    • #1 mATX case available
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Review Image by QT QT
Review Image by QT QT
Review Image by QT QT
Review Image by QT QT
Review Image by QT QT
Review Image by QT QT
Review Image by QT QT
Pros: Functionally, the best mATX case I’ve built in and I also really like the way it looks. Simplistic design. Superb airflow. Lots of room behind mobo for cable management. BTF mobo support. $60 on sale. This case fits 7 full sized (25mm thick) fans in this case, 2x 140mm & 5x 120mm. If you want a more sleek build like mine, you can fit the 2x bottom 120mm fans in the PSU compartment if you use a SFX psu & a little ingenuity. Cons: Flimsy front panel that may bend easily during removal. No headphone/microphone jack. Only a single USB 3.0 port. No dust filters. No cable grommets. Power Supply has to be inverted, taking in “fresh” air from the case that could potentially be robbing the gpu or cpu of some airflow. ... show more
Reviewed in the United States on October 8, 2025 by QT QT
    • PSU placement was a missed opportunity
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Could be perfect if it weren’t for the dumb psu placement. My old nzxt suffocation machine had better psu placement than this one that fights my gpu fans.
Reviewed in the United States on October 23, 2025 by John
    • Would recommend for anyone looking for a sleek case with airflow
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Great case. Feels quality for the price and I had no issues installing components.
Reviewed in the United States on October 27, 2025 by Jacob Buff
    • Great value and performance
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Review Image by Joshua Schubert Joshua Schubert
Review Image by Joshua Schubert Joshua Schubert
Review Image by Joshua Schubert Joshua Schubert
Review Image by Joshua Schubert Joshua Schubert
Simple but solid. The Nzxt is everything from a great first time case for newer builders, all the way to spectacular foundation to a stunning build! It comes with everything you need and nothing you don't. It has great airflow without having to purchase excessive fans.
Reviewed in the United States on October 28, 2025 by Joshua Schubert Joshua Schubert
    • A purpose-built Micro ATX case!
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
I am very pleased with this H3 case. I wanted to build a very quaint, high-end AM4 gaming rig. This case is well ventilated and well accommodates my EVGA GEFORCE RTX 3090 Ti FTW3. I have two 140mm front panel fans, 120mm rear exhaust, and an AIO to cool the CPU. This case fit the bill, a billion percent. ... show more
Reviewed in the United States on October 9, 2025 by Joe Gallardo
    • Well made, includes everything you need from a case.
Size: H3 Flow (2025) Style: Non RGB Fans Color: Black
Easy to build in. Be aware, you do lose front panel audio but that doesn't bother me personally in the slightest. Also note, RM850x Shift will no fit, even with Cablemod cables. If the PSU was able to sit in like a couple milimeters more, it would've been perfect, but the standard RM850x fits no problem as expected, so not a huge loss. The only thing I wish all case makers would do though is include a 90 degree adapter for the type c header but that would also depend on the motherboard in some cases due to the way they orient the header itself. Otherwise a great case and a nice return to MATX from NZXT. I do miss the H400i look though with the bar going down the inside but this will do. ... show more
Reviewed in the United States on October 13, 2025 by j
    • it’s alright
Size: H3 Flow (2025) Style: Non RGB Fans Color: White
it’s good if you know what you’re doing
Reviewed in the United States on July 25, 2025 by Brigham

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