heavy duty sliding barn door floor guide for bottom lower wall mount with hardware ronin factory most sliding barn door hardware kits come with a bottom door guide that screw to the floor. if you have carpet, wood or tile floor it can be a struggle to install. with the old designs you have to cut a hole in your carpet or drill holes in your tile and hardwood floors, which means you can't easily convert back without fixing your floor. our lower barn door guide mounts to the wall behind the door, out of sight and does not require any drilling into your floors.