Supply and technical support for made-to-order cavity slider systems including Joey Cavity Frames' Zero Clearance and Fast Fix models as well as EZ Concept's CavKit flush cavity slider trims. Varied priorities of function and design are addressed with track-and-roller hardware that may be easily accessed for adjustability / maintenance or entirely concealed for minimalist visuals. Modern design can be taken a step further with steel trims around the door's perimeter designed to be painted over and be indistinguishable from the wall.