Process and system for installing replacement door

A process for installing a replacement door slab in a door frame by door hinges instead of an existing door slab, the process comprising the steps of:

• providing a door mounting support including a frame member and at least one tie device, the frame member including first and second A-shaped segments interconnected by a bottom section and together defining a door support channel therebetween adapted to receive a portion of the door slab therein, the at least tie device including a cable tie extending across the door support channel and a locking tab attached to the cable tie by sliding the locking tab over the cable tie;
• positioning the door mounting support under a bottom edge of the existing door slab hung on the door frame so that the bottom edge of the existing door slab is disposed in the door support channel of the door mounting support above the cable tie of the at least tie device;
• acquiring a door gap defined as a distance between the bottom edge of the existing door slab and a floor by pulling the cable tie so that a portion of cable tie is raised to touch the bottom edge of the existing door slab;
• locking the cable tie in place by pushing the locking tab down toward one of the A-shaped segments;
• removing the existing door slab from the door frame and from the door mounting support;
• placing the replacement door slab on the cable tie in the door support channel of the door mounting support;
• and
• securing the replacement door slab to the door frame by the door hinges.