These are brackets that can be hung on a standard 2x4 deck rail and supports up to 8 inch deep planter boxes. Fits very snug to the 2x4 and if using the suggested planter box (24 or 36 inch) you should not need to use any of the included fastening holes.

Sturdy:

The main reason I designed these is due to the store purchased ones seemed flimsy and cheap!

• Tested these with the 24 inch long planter that was watered and it was pretty heavy. 
• Most angles have a filet to increase strength

Suggested planter box: [https://www.homedepot.com/p/Dynamic-Design-Newbury-Small-7-86-in-x-23-75-in-Terracotta-Resin-Window-Box-with-Saucer-NW2412LT/204496682](https://www.homedepot.com/p/Dynamic-Design-Newbury-Small-7-86-in-x-23-75-in-Terracotta-Resin-Window-Box-with-Saucer-NW2412LT/204496682)

Profile Settings:

• Filament: PETG or equivalent for outdoor use
• Nozzle: .6 with 30mm strength
• Strength: 3 walls with 25% infill

The following fastening holes are available but as noted above probably not necessary if using the suggested planter box: