Description
A tapered airflow duct that adapts a 3-inch (76.2mm) square PC fan mount down to a 2-inch (50.8mm) circular exhaust. The transition is spread evenly across a 4-inch (101.6mm) total height to maintain smooth airflow.
What it's for
Designed to funnel cooling air from a standard square frame fan into a 2-inch hose or circular pipe without choking the pressure. The straight 10mm collar at the top provides an easy clamping surface for tubing.
Dimensions
- Base Flange: 76.2mm × 76.2mm (3" × 3")
- Mounting Holes: 4.5mm diameter, spaced 63.5mm (2.5") on center
- Output Collar: 50.8mm (2") inner diameter
- Overall Height: 101.6mm (4")
- Wall Thickness: 2mm
Assembly
The mounting holes are sized to clear standard PC fan screws. If your specific 3" fan has a slightly different hole spacing (common in older non-standard sizes), the corner tabs have enough solid material left to allow drilling out custom alignments.
Images
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