NZXT H2 Flow (2026) / Fractal Design Meshify 3 Ambience Pro RGB

NZXT H2 Flow (2026): CI-H21FB-01 · black; Mini-ITX case

Fractal Design Meshify 3 Ambience Pro RGB: FD-C-MES3A-03 · black, light-tint tempered glass

SpecificationNZXT H2 Flow (2026)Fractal Design Meshify 3 Ambience Pro RGB
Release year20262025
Model year2026 NZXT—
Dimensions and volume435 × 181 × 263 mm (height × width × depth); 20.7 L NZXT433 × 229 × 507 mm (L × W × H); 46.79 L Fractal Design
Weight4.55 kg; empty case NZXT9.1 kg net Fractal Design
ConstructionSteel; hybrid tempered-glass and mesh side panel NZXT—
MotherboardMini-ITX; no back-connect motherboard support NZXT—
Power supplySFX / SFX-L; up to 130 mm long

Not designed for an ATX power supply.

NZXT		ATX, up to 180 mm Fractal Design
Graphics card clearanceUp to 331 mm long, 65 mm thick and 150 mm wide NZXT—
Combined GPU and radiator fitFront AIO tube covers, fittings and cables can reduce available GPU width

Being shorter than 331 mm does not alone guarantee compatibility.

NZXT		—
CPU air cooler75 mm maximum height

NZXT's product guidance also calls for at least 10 mm between the cooler and glass.

NZXT		—
Front radiatorUp to 280 mm; combined radiator and fan thickness up to 60 mm NZXT—
Fan mountsFront: 2 × 120 or 2 × 140 mm; top: 2 × 120 mm NZXT—
Included fansTop: 2 × 120 mm F120Q Case Version exhaust fans; 3-pin DC

Not PWM fans or a guarantee of whole-system silence.

NZXT		3 × Momentum 14 (front, 140 mm) Fractal Design
Front connections2 × USB 3.2 Type-A; 1 × USB-C 3.2 Gen 2×2; headset jack NZXT—
Drive bays2 × 2.5-inch, up to 8.5 mm thick; no 3.5-inch bays NZXT—
Expansion and riser3 vertical slots; included 260 mm PCIe 5.0 ×16 riser

Three slots of width do not mean three separate PCIe connections.

NZXT		—
Model code—FD-C-MES3A-03; Ambience Pro RGB, black, light-tint tempered glass

The Meshify 3 family includes non-lit, RGB and Ambience Pro RGB versions; the larger Meshify 3 XL is a separate product.

Fractal Design
Panels—Tempered glass left side, steel right side; mesh front panel Fractal Design
Motherboard support—E-ATX, ATX, Micro ATX, Mini ITX; 7 expansion slots Fractal Design
Graphics card—Up to 349 mm long, 176 mm wide Fractal Design
CPU cooler—Up to 173 mm tall Fractal Design
Fan positions—Front 3 × 120/140 mm; top 2 × 120/140 mm; rear 1 × 120 mm Fractal Design
Radiator support—Top 120/140/240/280 mm; front 120/240/280/360 mm; rear 120 mm

A 360 mm radiator is not supported at the top.

Fractal Design
Drive mounts—2 × 2.5-inch; 4 × combined 3.5/2.5-inch Fractal Design
Front I/O—2 × USB-A 5 Gbit/s; 1 × USB-C 20 Gbit/s; headset jack Fractal Design
Cable management—34.5 mm routing space; cable cover and aligners, hook-and-loop straps Fractal Design
Dust filter—PSU dust filter; tool-less removable bottom panel Fractal Design
Lighting—Ambience Pro lighting (ARGB Gen 2); Adjust Pro Hub included

Lighting and fans are controlled through the hub; a Fractal Connect cable is in the box.

Fractal Design
Warranty—2 years Fractal Design