A simple, aesthetic, 2-hole bracket for universal mounting/clamping purposes of rectangular pipes or similar. 

Print flat for max stability, no support needed.

Use washers or barrel head screws, resp., avoid using countersunk screws directly. This allows the screw to be tightened securely without stressing or separating the printed layers. 

The provided Fusion360 project adds 0.5mm to the selected washer_OD and the hole_dia automatically, as well as 0.2mm on top of the given inner_width. Play with the parameters as you need, but be aware that not all combinations work, of course. (Feel free to share your created models with me via PN, so I can add them to the download section!)

Some exemplary exports are given, following the naming scheme (all in mm):
...inner_heightxinner_width_clampWidthW_clampThicknessT_hole_diaHole_washer_ODWasher.stl