"Sam Takoy" wrote in message
...
Hi,

I've been told that I can't use flexible duct for a kitchen exhaust fan.

What's the reason for that?

Thanks,

Sam

The inside of the pipe will be corrugated, not smooth. Over time it will
collect grease and dirt far faster than a smooth pipe and will potentially
either start on fire or feed a fire already going. It does not happen often
in the home, but a lot of restaurant fire happen in the ventilation system.

Take the time to do the job right.