Roll out tray for a 21" base cabinet. The drawer glides and wood finish for the roll out tray will be the same as the standard drawers for this collection. **Please note, if using with a partial overlay collection (Tribeca Shaker or Glazed Praline), order according to the width of a cabinet, for example, the 15" roll out tray fits a 15" wide base cabinet. For full overlay collections, order according to the width of the cabinet if the roll out is NOT being installed between the hinges. If it will be installed between hinges, order 1 size smaller (for example use the 15" roll out for an 18" wide base cabinet) and use included shims for installation so the tray clears the hinges when opening**