using these in our 3-season porch.  they come with the hardware to screw them in, but I tension-mounted them.  they seem sturdy even without using the middle bracket for extra support on the longer spans of windows.  they arrived quickly and were individually packaged well, undamaged despite the condition of the outer shipping box, which looked like an ape had jumped all over it like the American Tourister ads.  cost more than we initially wanted to spend, but these were the only tension-mounted rods which offered the range of widths we needed.  they seem solid and well-made.  I'm hoping that being rated for outdoors means they'll hold up to exposure to moisture and temperature changes on the porch for a long time to come.   if they do, then they'll be well worth the money.