A seal-end package or box for dispensing a solid pourable product includes folding major side panels foldably connected together extending laterally, and formed into a tube around a central axis. Further extending laterally is an overlapping panel similarly folded over and conforming to the tube. A slide is connected to the major side panels, with the overlapping panel having a cover panel with an opening. The slide obstructs the opening, until a thumb tab on the slide engaged by a user and moved laterally relative the axis un-obstructs the opening allowing dispensing of the product.