I have gutted my bathroom and started building it back. Tub and surround replaced and all sheetrock up. Put down cement board and am going to tile the floor. I have no door or door frame at the moment and the floor outside the bathroom is just subfloor. I need some suggestions on how to have the 2 floors meet and what to do at the door frame. I plan on using a pre-hung door with a 2 piece jamb. Floor outside of the bathroom will be laminate. I have looked at a marble type threshold which is 4x24 and would fit in the door jamb as I'm using a 24" door. Just confused on how it all meets up at the door and what to set the jamb on top of.