
Two 80 mm fans · Rear exhaust
Lian Li O11 Dynamic Dual 80 mm Exhaust Duct
In stockGive two 80 mm exhaust fans proper mounting points on the rear of the original Lian Li O11 Dynamic. The duct’s inner channel runs smoothly from the round fans to the case’s 67 x 144 mm rear opening.
Made for the original Lian Li O11 Dynamic (O11D). The solid corners take standard fan screws directly, with no inserts. You’ll need two 80 mm fans, 8 fan screws and 4 M3 or M4 self-tapping screws; none are included. Fans are shown for fit and scale, and airflow is illustrative. See Etsy for available colors.
Manufactured from premium PETG-HF for thermal resistance and structural durability.
Why it’s designed this way
Mount two 80 mm exhaust fans properly behind the O11D’s rear grill.
Before you order
- A Lian Li O11 Dynamic (original O11D)
- Two 80 mm fans
- 8 standard fan screws and 4 M3 or M4 self-tapping screws
Setup & use
- Step 1
Fit the fans to the duct
Screw both 80 mm fans to the duct with 8 standard fan screws, blowing toward the rectangular end.
- Step 2
Hold it against the rear opening
Hold the duct inside the case with its rectangular end over the 67 x 144 mm rear opening.
- Step 3
Screw it in place
Fix it with 4 M3 or M4 self-tapping screws and connect the fans.
Drawn from the product’s 3D models. Cases, desks, devices and other surroundings are illustrative; drawings are not measured plans.
Care & troubleshooting
Check the screws are snug. Clear dust from the fans and grill now and then.





















