Inside a standard sliding glass door there are adjustable rollers that help it slide back and forth on the track.
Roller adjust pace sliding door.
How to adjust sliding glass door rollers for a smoother ride.
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There are holes on your sliding glass door that conceal the adjusting screws to these rollers.
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On my door the holes had plastic plugs in them.
Most sliding glass doors contain two sets of rollers one on each side of the bottom of the door.
This is how to adjust the door s rollers to ensure smooth operation and maintain weather.
You can alter the height of these rollers by accessing the adjustment screws which are set into slots on the door s outer edges perpendicular with the rollers themselves.
Locate the adjustment screws on the lower edges of the door.