Submitted by ninian1927 t3_11azplu in DIY
Hi, I'm looking at replacing my 30 inch over the range microwave with a range hood. The fan is useless and there is no external venting at present time. I plan to go into the cabinet directly above and then out the wall, the cabinet and range hood will be on the exterior wall.
My problem is there is a stud that I will likely hit if I take the direct approach, so I need to offset to the left a bit and then go out to the wall. These would all be very small ducts in terms of length, but 8 inch diameter. The manufacturer says to use 2 45 degree ducts instead of 90s as 90s will cause more turbulence and noise. I can't seem to wrap my head around how I could go from the top of the range hood and out the wall using two 45 ducts? Am I missing something obvious here... I clearly am!
Only-Replacement-198 t1_j9vfqp3 wrote
Hard to know without a picture. An 8" diameter seems like overkill.