Bottom rollers for 800 series metal door

Hello, thank you for posting,

Please start by reviewing the style and dimensions of the 81-027 roller assembly to see how it compares to your original. Let us know what you think! 

Alternate image for 81-027

Looking at the photos of the track and door, most sliding doors have a guide. Unfortunately with the original missing, we cannot confirm which style the door may have used. Do you have any idea of the brand of the door? We may be able to determine by the brand, but we cannot guarantee.