Just a tip for those who might not be aware of the types of wheels used on Aluminium sliding doors.
A couple of years ago I replaced a broken wheel with a anew nylon one that I bought at Bunnies, This one recently collapsed because the bearing failed.The result was much scraping of the top of the rail.

When I replaced this wheel again I had a good look at what I could buy.There are three types of wheel available: the "standard " nylon, "heavy duty" nylon with amuch larger bearing and a stainless steel wheel with a larger bearing. I chose the SS and the door has never run better.


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