This Unit Appears To Fit Our Sliding Patio Door

Greetings

I want to replace the 2 tandem roller units on our Duplex Units vinyl patio door. The home was built in 1978 so I assume it is original wheel bearing rollers. I do not know the manufactuture of the doors it had Gallagher stamped in the glass corner but upside down. We had gone through two patio handles in a month from my elderly dad pulling on it so I knew the rollers were likely wearing out. We did manage to remove them clean them well we keep the tracks clean and lubicate them often . We applied WD 40 lubicrated them and they are sliding much easier then previous but I still know in the long run they should be updated it isn't as urgent now they are sliding much easier. We own a duplex thankfully one of the doors are French Doors which saves me from this arigous task. I included a photo of one side. The screw holes appear to match to the tamdem sets you are offering the wheels measure 1 1/2 in diameter. The video you have for uninstall and install was excellent. Do you feel these will fit?