Door guides are already provided in all 1925 Workbench Barn Door Sets.

The floor-mounted guide screws into the floor and can either support the sliding door along the edge of the guide or with the guide's shaft installed into a channel on the lower edge of the door.

The wall-mounted guide screws into the baseboard or wall and supports the door by running underneath the door panel, creating a U-shaped form that keeps the door on track.

If you need extra floor guides for other reasons, you can order them here.