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Black mid-tower ATX case with mesh front, walnut wood accents and tempered glass side panel

Antec

Antec FLUX REAR Mid-Tower ATX PC Case

SKU CH-QPN0-VR9KD

Mid-tower ATX case with front PSU chamber, five pre-installed PWM fans, 360 mm top radiator support, back-connect motherboard compatibility and wood accents

  • Max graphics card length420 mm
  • Housing materialSteel / Plastic
  • Supported motherboard sizesATX / E-ATX / ITX / Micro ATX
  • Side panel typeTempered Glass Side Panel
  • Dust filteringBottom / Side / Top
  • 3.5-inch internal bays1

Model FLUX REAR

  • Front-mounted PSU chamber directs cool air straight to the GPU
  • Five pre-installed PWM fans deliver balanced airflow out of the box
  • Top panel accepts 360 mm radiator for high-capacity liquid cooling
  • Compatible with back-connect motherboards for cleaner cable routing
  • Tool-free tempered glass and steel panels simplify build access

Engineered for Airflow and Aesthetics

The Antec FLUX REAR is a mid-tower ATX case built around the F-LUX Platform with a front-mounted PSU chamber to improve GPU thermals. A large mesh front panel and support for up to eight fans create strong intake and exhaust paths. Premium walnut wood-style accents and a 4mm tempered glass side panel give the chassis a distinctive, natural look.

Suits Clean Builds with Back-Connect Boards

Builders using back-connect motherboards will appreciate the reversed rear I/O layout and 37mm of cable management space behind the motherboard tray. Tool-free side panels simplify assembly and future upgrades. The front PSU chamber shifts the power supply away from the graphics card, so this layout works best when that thermal separation matters.

Five PWM Fans and a GPU Bracket Included

Two 140mm ARGB PWM fans at the front, two 120mm PWM reverse fans on the PSU shroud and one 140mm ARGB PWM fan at the rear are pre-installed for immediate airflow. A built-in GPU support bracket adds stability for heavy cards and a 13A extension cable ensures reliable power delivery to high-wattage units.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $69.99
Cheaper than about 73% of the 1,468 comparable items (median $100.99).
Max graphics card length 420 mm
Higher than about 77% of the 894 comparable items (median 400 mm).

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Specifications

Product
Model nameFLUX REAR
Product typeATX Mid Tower
Product colorBlack
Storage
3.5-inch internal bays1
2.5-inch internal bays2
Ports & slots
Expansion card slots7
Size & build
Max graphics card length420 mm
Housing materialSteel / Plastic
Side panel typeTempered Glass Side Panel
Dust filteringBottom / Side / Top
Fan mounting optionsFront 3 × 140 / 3 × 120 mm
Top 2 × 140 / 3 × 120 mm
Power Supply Shroud 2 × 140 / 2 × 120 mm
Rear 1 × 140 / 1 × 120 mm
Shipping weight9.80 kg
Package size533 × 508 × 318 mm
Compatibility
Supported motherboard sizesATX / E-ATX / ITX / Micro ATX
Radiator supportFront 120 / 140 / 240 / 280 / 360 mm
Top 120 / 140 / 240 / 280 / 360 mm(Maximum RAM height: 52 mm)
Rear 120 / 140 mm
CPU cooler height limit185 mm
PSU length limit240 mm
More details
Included fansFront - 2 × 140 mm / Middle - 2 × 120 mm / Rear - 1 × 140 mm

Other versions of this model

5 more in the same range

Questions about this item

What motherboard form factors does the Antec FLUX REAR case support?

The case fits ATX, E-ATX, Micro ATX and ITX boards, so your existing board will mount as long as it matches one of those sizes.

Can I keep my current 360 mm liquid cooler when moving to this case?

Yes, the top panel accepts radiators up to 360 mm, and the front also supports 360 mm, so a 360 mm AIO will fit in either location.

How do I verify the pre-installed fans are running under PWM control after assembly?

Connect the fan headers to the motherboard, then use the BIOS or fan-utility software to confirm each fan reports a PWM duty cycle and spins between its minimum and maximum RPM.

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