Fits a standard size breadboard within. Holes can be drilled as needed for cables, etc.
Customized version of http://www.thingiverse.com/thing:551484
Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=551484
Using the following options:
cover_wall_thickness = 1
cover_internal_height = 4
part_selector = 3
cover_external_height = 2
base_height = 40
external_length = 90
external_corner_radius = 7
external_width = 60
cover_printing_y_offset = 10
cover_thickness = 2
bottom_thickness = 2
cover_internal_margin = 0.5
wall_thickness = 1