arrow points to upright

white lines are the how I cut the wood out. arrow points to wood  shelf bolted to front.  circle shows line of bolts to upright which  holds the front boards together

top arrow points to cedar cap, next arrow points to PVC "columns" holding liner down. bottom arrow points to  flat piece of plastic under liner which supports the liner so water flows out further.  the liner has been trimmed close to the wood since the picture was taken.  it is all covered by plants in summer anyway. I should have used silicon caulk to hold the liner down and, used silicone sealer between the cedar boards since there is some leaking by capillary action.