The Industrial Heavy-Duty Floor Mounted Stay Roller Barn Door Floor Guide is a great option to guide an extra-large door.

While there are maximum door thickness limits on the other floor-mounted door guides, this guide can be placed anywhere on the floor and has no maximum door thickness limit! The body casing of this industrial sliding door floor guide roller is available in stainless or black powder-coated steel. Both finishes come with a black nylon wheel.