Searching for Sliding Glass Door Roller

Those patent numbers often aren't actually all that helpful with identifying replacements, as they tend to be used with a number of similar but different models, or can't be correlated at all. Andersen doors tend to use the 81-018, 81-128, or 81-149, but the only way to know if any of these three rollers are what you need is to remove one and show us pictures, and to compare the dimensions. See the videos I've listed on this page.