Customized version of https://www.thingiverse.com/thing:47042

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=47042

Using the following options:

Length = 27.5
Depth = 22
Thickness = 6
Corner_Radius = 3
Leg_Length = 11
Leg_Width = 4
Total_Height = 6
Pin_Diameter = 3.5
Pin_Length = 2.5
Pin_Height = 1.75
Pin_Support_Gap = 1