The case is a metal frame, strong and stable; The 2 side of plate is acrylic material, you can see the device inside through the acrylic. This case support both SFX, FLEX(1U) power supply. When use for FLEX(1U) power supply, it need to use SFX to FLEX(1U) converter hoder together. Please tear up the protection film on the acrylic before use it. Specification: Name: SFX Case Model Number: Case for TH3P4G3 Dock Support max size of graphic card: 200mmx150mmx50mm Use for: Install TH3P4G3 -compativble GPU dock Suitable for graphics cards within 20cm in length Material: Acrylic + metal colour: Black Package Contents: 1 x Graphics card chassis With mounting screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.