On Tuesday, 27 October 2020 16:41:38 UTC, David WE Roberts (Google) wrote:
There are lots of generator covers on Amazon for under £20 but it is not
clear to me if they can be left over the generator whilst it is running.
Anyone have something similar which works?

If you want to reduce noise, fitting a baffle box to the exhaust, and surrounding the genny with panels similar to those used by acoustic fencing, should help somewhat.

https://www.echobarrier.co.uk/product/s1/

Owain