Product review (5 stars): .
My elderly parents had difficulty opening and closing their refrigerator's storage bins (crispers) due to a broken guide.  As such, I promptly ordered an exact replacement on February 8 (Wednesday) with delivery on February 11 (Saturday).  The shipping box's construction was VERY STURDY.  In addition, the replacement guide was sufficiently padded for additional protection and to prevent excessive movement during transit.  Installing the replacement was done on February 13 (Monday).  My parents are pleased to be able to open and close the crispers without difficulty.