Open Frame ITX PC Case

This open-frame case is designed for Mini-ITX motherboards and SFX/SFX-L power supplies, offering a compact yet high-performance platform. Its vertical layout and open structure promote excellent airflow, easy access to components, and a clean, industrial aesthetic. The case is compatible with 15×1mm tubing of your choice and length. All parts of the case can be printed using PLA. However, the PSU brackets is recommended to be printed in PETG or a stronger material to ensure heat resistance, especially under load. CPU cooler in the pictures is a Noctua C14S.

Hardware Compatibility and Requirements

• Air CPU coolers up to 145mm in height, as well as larger coolers that can fit between the tubes
• Supports any radiator that uses 120 or 140mm fans in a linear mode (240, 280, 360 etc)
• Motherboard: Mini-ITX
• Power Supply: SFX / SFX-L
• GPU: Designed for 2-slot cards, but can accommodate 3-slot or larger GPUs
   
• 15mm outer diameter / 13mm inner diameter (15×1mm) tubes
• Recommended tube materials: Copper, steel, or aluminum (preferably stiff)
• Tube length is customizable: you can choose any length that fits your layout and cooling needs
• Example shown: 360mm tubes
   
• 10 × M3 × 30mm screws
  • 4 for top plate
  • 6 for bottom plate
     
• 6 × M3 × 10mm screws
  • 4 for motherboard
  • 2 for GPU
     
• 16 × M3 nuts
  • 4 for top plate
  • 6 for bottom plate
  • 2 for GPU mount
  • 4 for securing motherboard
     
• 4 × PSU screws

3D Parts List

• Standard Configuration
• Top plate – 205 × 205 × 10mm (choice, without lip)
• Top plate lip 10mm – 205 × 205 × 20mm (choice, with lip)
• Bottom plate – 205 × 205 × 20mm (requires 1)
   
• No-GPU Configuration
• Top plate no GPU – 205 × 165 × 10mm (choice, without lip)
• Top plate no GPU lip 10mm – 205 × 165 × 20mm (choice, with lip)
• Bottom plate no GPU – 205 × 165 × 20mm (requires 1)
   
• Feet & Tube Mounting
• Feet – Feet for bottom plate, no tube (requires 2)
• Feet tube – Feet for bottom plate (tube, requires 2)
• Feet wedge – For securing tubes to top and bottom plate (requires 8)
• Cap – For bottom plate feet (requires 2)
• Cap tube – For top and bottom plate (requires 6)
   
• Motherboard Mounting
• Mobo fastener R – For mounting motherboard (requires 2)
• Mobo fastener L top – For mounting motherboard (requires 1)
• Mobo fastener L bottom – For mounting motherboard (requires 1)
   
• Button, Screws and PSU Brackets
• Button 16mm/12mm – For power button (requires 1)
• Screw tapered – For securing part to plates (requires 10)
• PSU bracket front – For securing PSU (PETG, requires 1)
• PSU bracket back – For securing PSU (PETG, requires 1)

Parts List (Optional)

• Radiator fan bracket 120mm – For mounting 120mm fans or 240mm radiator (optional, requires 4, per fan)
• Radiator fan bracket 140mm L – For mounting 140mm fans or 280mm radiator (optional, requires 2, per fan)
• Radiator fan bracket 140mm R – For mounting 140mm fans or 280mm radiator (optional, requires 2, per fan)
• Spacer 5–50mm – For adjusting height of radiator fan brackets / radiator (optional)
• Cable tie – For securing cables to plate (optional)
• PSU cable shroud – For hiding PSU cables (optional, requires 1)
   

Design by FiftyFifty on MakerWorld (license: CC0).