K40 eBay CO2 Laser Exhaust Fan Adapter for Marine Vent Hose!

In working to optimize the fume extraction of one of my CO2 laser I wanted to more closely match the vent size of the actual vent being 4,000 sq/m while the 3-inch marine ventilation hose (find it here: http://amzn.to/2iktIiw) which has a surface area of 4.500 sq/m so proves a closer match of size.

Also worth note there is also available a booster (here: http://amzn.to/2hvEvqD ) to fit this hose size for additional performance or longer runs.

**Note:** In this design the "funnel" was pr