Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5486618.

Designed this to extend the windowsill on our Pella windows, which somehow has a nearly 1 cm gap between the lower sash's bottom rail and the stool on the frame (see pics). This gap is used to help anchor the brace and increase its supported weight capacity. As shown in the pics, it can support at least 10 lbs. The gap between each brace is bridged by an wooden plank (here I cut ~ 3X10 inch pieces and used two) to carry/display your plant or display item.