Use a flat head screwdriver to remove the threshold from the floor.
How to remove rear panel from sliding glass door.
Unscrew the head stop with a power or phillips screwdriver.
Place the screwdriver beneath the threshold edge flat against the floor and pry the wood gently up taking care not to gouge the floor s surface.
2 removing the screen door start with the removal of the screen door.
To remove the screen door use a flathead screwdriver.
Determine the size of the screwdriver you ll need reach back into the gap with your screwdriver and adjust that screw counter clockwise as far as it will go.
Next you ll need to remove the adjustment screws by accessing them on the side panels at the bottom of the door.
If your sliding glass doors don t have the screen door then you may move on to the next step.
Remove this cap because as you ll notice it is covering a gap inside of which is a screw.
Do the same on both the left and right ends of the sliding door.
Remove the sliding glass door at the bottom of the track you ll see a slight indent that is intended for easy removal.
Remove the threshold placed in front of the fixed sliding glass door panel.
Slide the door till it hits this point.
If you can t undo it with a manual screwdriver try a power screwdriver.