Robust Shelf Brackets, ABS Large and Small

Looking at brackets available and I could not find one that seemed to be robust enough for my needs and did not take a large amount of filament to produce. Therefore I designed my own that takes less than 80g of filament with the applied settings in the profile and felt sturdy enough. The large bracket is 8.5" x 8.5" while the smaller bracket is 8.5" x 5.5". The profile is setup for ABS and I have printed dozens without issue. The counter sunk screws are flat for a wood screw with a flat head. I felt this gave the bracket more surface area to the screw head making a stronger joint.