In this work, we investigate the in-plane transport properties of aqueous NaCl confined within rigid graphene slit pores. We consider slits containing one, two, three, four, and five layers of water, in which H, the distance between the graphene sheets, is 6. 83, 9.25, 11.78, 14.62, and 17.29 Å. Each of these systems is depicted in Fig. . These slit heights are comparable to those that can be fabricated experimentally using a van der Waals assembly method, where atomically flat sheets are separated by spacers made from a precise number of graphene layers. We determine the total density of electrolyte within each slit through an equilibration procedure in which one of the graphene sheets is allowed to move under the force of a piston applying a pressure of 1 atm. The equilibrium slit height obtained from this procedure reflects the preferred layering of water and ions in the slit; see Fig. for the density profiles of each system. In each slit, the ratio of ion pairs to water molecules is fixed at approximately 1:55, corresponding to a 1 M solution in a bulk electrolyte. Details on the exact composition of each system are provided in the Supplementary Information (SI). All simulations were run using a neural network potential developed in our previous work. The model was trained on reference calculations at the revPBE-D3 level of theory, which has been shown to accurately capture both water-graphene and NaCl-water interactions.