Rated 2.3 out of 5 by 3
Rated 1.0 out of 5.0 by Steve An exercise in futility
I couldn't get all the sections to turn. They locked up and became impossible to rotate a fraction of an inch further so I was unable to achieve the necessary 90 degree angle. I even lubricated each section crease with WD40. A bad design and a complete waist of time.
October 26, 2015
Rated 2.0 out of 5.0 by Ratherhavefun Extremely difficult to twist sections
Purchased a couple of the 10 inch, 90 degree vent pipes. These are sold straight as you will need to twist three of the sections to form the. 90 degree shape. Much easier said than done! I struggled twisting both of them. Two of the sections wouldn't turn enough and bound up. If I did not need them, I would have thrown them right in the trash. However, I must say once I manged to twist to the 90 degree shape I had no other issues. I am recommending this because there are no other options. I would hope that the manufacturer would be notified to check their quality control and see the problem which I mentioned.
April 11, 2014
Rated 4.0 out of 5.0 by NOVA Met my needs
Good quality sheet metal, to spec. But as another reviewer noted, pieces making up the elbow are hard to rotate to achieve a desired angle.
September 16, 2014