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Open-frame aluminium PC chassis in black with vertical GPU mount and crossflow fan

ASUS

ASUS ROG GR20 EDITION Open-Frame PC Case

SKU CH-A7F3-HTH2C MPN ROG GR20 EDITION

An open-frame aluminium chassis supporting EATX boards and 368 mm GPUs with three orientation options and a bundled crossflow fan

  • Max graphics card length368 mm
  • Housing materialAluminum / Steel / Plastic
  • Power supply mountingBottom
  • Supported motherboard sizesEATX (up to 12 in x 10.9 in), ATX, Micro-ATX, Mini-ITX
  • Expansion card slots2 / 2 x Vertical
  • Front panel ports1 x headphone / Microphone, 2 x USB 3.2 Gen1, 2 x USB 3.2 Ge
  • Open-frame design enables unrestricted airflow for efficient heat dissipation
  • Crossflow fan provides wide airflow coverage improving SSD thermal performance
  • Three placement options — vertical, angled, horizontal — suit diverse desk setups
  • Predominantly aluminium frame delivers structural rigidity and premium finish
  • Supports EATX motherboards and graphics cards up to 368 mm with reinforced bracket

Open-Frame Aluminium Chassis

The ROG GR20 Edition is an open-frame E-ATX mid-tower built mainly from aluminium and steel. It targets enthusiasts who want unrestricted airflow and a showcase build that can sit vertically, angled or horizontally on the desk. The bundled crossflow fan pushes wide airflow across the motherboard tray and storage area. No power supply is included.

GPU And Radiator Clearance

Graphics cards up to 368 mm long are supported with the supplied reinforced bracket for stability. A side-mounted radiator up to 360 mm can be fitted using three 120 mm positions. The power supply bay accepts units up to 190 mm deep. Builders needing more than two vertical expansion slots or any 5.25 inch external bays will not be accommodated.

Detachable High-Speed I/O Panel

The removable front I/O module provides two USB 3.2 Gen 2x2 Type-C ports running at 20 Gbps and two USB 3.2 Gen 1 Type-A ports at 5 Gbps, plus a combined audio jack. This specific port mix decides whether the case matches a motherboard with matching internal headers and a user who needs front-access 20 Gbps Type-C connectivity.

How it compares

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

Price $489.99
Pricier than about 89% of the 1,468 comparable items (median $100.99).
Max graphics card length 368 mm
Lower than about 67% of the 894 comparable items (median 400 mm).

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Specifications

Product
Brand nameASUS
Product lineROG
Model nameGR20 Edition 20
Product typeE-ATX Mid Tower Chassis
Product colorBlack
Storage
5.25-inch external baysNo
Ports & slots
Expansion card slots2 / 2 x Vertical
Front panel ports1 x headphone / Microphone, 2 x USB 3.2 Gen1, 2 x USB 3.2 Gen 2 × 2 Type C
Power
Power supply includedNo
Size & build
Max graphics card length368 mm
Housing materialAluminum / Steel / Plastic
Power supply mountingBottom
Product dimensions285 × 513 × 470 mm
Product weight9.3 kg
Shipping weight15.88 kg
Package size689 × 598 × 362 mm
Compatibility
Supported motherboard sizesEATX (up to 12 in x 10.9 in), ATX, Micro-ATX, Mini-ITX
Radiator supportSide - Up to 360 mm
PSU length limit190 mm
More details
Team affiliationNO
Radiator installedSide - 3 × 120 mm

Questions about this item

Will my current EATX board measuring 12 by 10.9 inches fit inside the GR20 Edition 20?

The case supports EATX motherboards up to 12 inches by 10.9 inches, so a board of that exact size will mount without issue.

How can I verify the bundled crossflow fan is actually moving air over my SSDs after I build?

Power the system and feel for steady airflow exiting the side of the frame; the crossflow design pushes a wide stream across the motherboard tray where M.2 slots sit.

Does the box include a power supply or do I need to buy one separately?

No power supply is included; you must supply an ATX unit no longer than 190 mm, which mounts at the bottom of the chassis.

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