Both planters in their final spot

Completed planter

Shelf raised up on 2x4 and screwed into place

Bottom shelf. Cross pieces glued and nailed in place

Thick plastic sheet stapled around each section as barrier against water/soil coming in direct contact with the cedar planks

Completed view

Center dividers installed. By staggering them, they also clamp the front and back boards together

Metal piece screwed in the middle with the front part flatter/raised so water drains towards the back.

Metal bent to create water drainage. This wouldn't have been necessary if there was no shelf below the planter bed

Metal from HVAC ductwork 4" pipe

Corners notched to fit around the corner blocks

Bottom pieces installed with middle left open

Screwed in bottom supports from outside

Added a third (half) plank to make it deeper. Sloped supports for bottom to drain water to middle of planter

Finished top view (or so I thought)

View from the outside

Front and back screwed into corner blocks

Corner blocks mitered to avoid injury

Sides: inside view

Finished sides

Eight legs

Cut pieces

Pickets