Flat tub mail positional orientation justification insert

A justification insert block adapted to be disposed within an article storage tub having a bottom surface and a plurality of upstanding side walls connected to the bottom surface, comprising:

• bottom surface means for disposition upon a bottom surface of an article storage tub;
• a plurality of side walls extending upwardly from said bottom surface means;
• and
• single, substantially planar top surface means, integrally connected to said plurality of side walls and inclined downwardly toward said bottom surface means from a first corner region disposed at a first elevational level, toward a second corner region disposed at a second elevational level which is less than said first elevational level, wherein other corner regions of said single, substantially planar top surface means are disposed at elevational levels interposed between said first and second elevational levels, for aligning at least one edge portion of each one of a plurality of articles against at least one upstanding side wall of the article storage tub when said justification insert block is disposed within the article storage tub and when the plurality of articles are placed upon said single, substantially planar top surface means of said justification insert block.