We are installing a fan which has a 150mm ducting outlet. Unfortunately the path will only allow a 100mm hole to be drilled. After the hole there will be a 90 degree bend followed about a 1.7 meter straight path out.
I was wondering if it would be better for that 1.7 meter length to stay as 100mm ducting or to turn it into a larger rectangular ducting?
Something like 150mm reduced to 100mm and then increase to maybe 220 x 90mm rectangular duct.
I’m not sure if increasing after being reduced would provide any benefit or not.
Any advice appreciated.
Thank you.
I was wondering if it would be better for that 1.7 meter length to stay as 100mm ducting or to turn it into a larger rectangular ducting?
Something like 150mm reduced to 100mm and then increase to maybe 220 x 90mm rectangular duct.
I’m not sure if increasing after being reduced would provide any benefit or not.
Any advice appreciated.
Thank you.