rSeries 3018-20 CaseProduct Overview This rSeries size has been engineered with all the same mil spec features and ultra tough construction of standard rSeries cases but is available in six different lid depths to help accommodate more applications. This size features built in wheels. Our rSeries cases come standard with an empty interior, and some models are available with: cubed foam, layered foam, padded dividers, and a pull handle with wheels. The rSeries Mil