Customized version of http://www.thingiverse.com/thing:26596

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=26596

Using the following options:

pad_heigth = 0
frame = 10
sides_angle = 45
bottom_angle = 45
thickness = 3
box_z = 50
box_y = 100
box_x = 100
struts_number_z = 7
struts_number_y = 7
struts_number_x = 6
pad_radius = 10
struts_width = 3