Abstract: An adapter assembly for mounting a paper roll product having a central hollow cylindrical core in a coreless roll dispenser includes side plates having a shape and size so as to frictionally engage with the hollow core of the paper roll product. The outer face of the side plates is substantially flush with the respective sides of the paper roll product. A female recess is defined in the outer face of the side plates at a location corresponding to the rotational axis of the plates and paper roll product. The female recess has a shape and size so as to be engaged by male protrusions of the coreless roll dispenser. At least one longitudinally extending connecting member may be disposed between the inner faces of the side plates within the hollow core of the paper roll product.