140mm to 4'' vent hose conical flange adapter. Let's you mount a 140mm fan to 4'' vent hose (i.e. dryer vent hose)

Comes with the 4 screws you'll need and a steel hose strap. Really easy - just slide on the hose, strap it down, and then screw in your fan to the adapter.

Fits standard 140mm fans and 4'' vent hose. Will almost certainly fit unless you have a really strange fan; if in doubt refer to the technical drawing and measure your fan & fan slot. ASK ME QUESTIONS IF YOU'RE NOT SURE!

This design smoothly shrinks between the 140mm airflow circle and the 4'' vent hose and has good plenum volume for optimal airflow.

Unlike other adapters, this design completely fills in the frame around the fan so everything is still sealed airtight afterwards and your fan works as efficiently as possible providing airflow.

PETG+ SHOULD BE FINE FOR MOST USES (TAKES 170F /75C WITH NO SOFTENING).
IF YOU ARE VENTING HOT EXHAUST SUCH AS FROM A DRYER, YOU MAY WANT TO CONSIDER ASA FOR MAXIMUM TEMPERATURE RESISTANCE (100C / 212F WITH NO SOFTENING).

If you need an adapter for other sizes to other sizes let me know and I can design one for you.

ONLY ONE FLANGE ADAPTER, STEEL HOSE STRAP, AND FOUR (4) SCREWS INCLUDED.