CDI: about that lip on the back of the shelves

hey, will the people at Chief Delphi help me out with this: at what angle is that new lip thing that’s been added at the back of the shelves for Chief Delphi Invitational? I hope you know what i’m talking about.

I do not know the angle of the back reinforcement, but I intended that it would be nested in the corner of the divider and point towards the very back of the shelving unit. It seems to be on about a 45 degree angle, plus or minus 10 degrees. The bottom of the backboard reinforcement should be close enough to not allow a juice bottle to fall through the gap. There is a new sketch posted on a Joe J. posting on the CDI message board - he has a url already linked and ready to be used.