Apply a generous amount of silicone along the pressure-treated lumber that should border your door jamb.
Lift sliding doors and lay into place.
Once the door is in place, add shims to make sure it's level.
After you ensure that the door is plumb, secure it to the lumber with 2 1/2-inch wood screws. Have a partner hold the door tightly in place while securing the screws.
Use a razor blade to cut the protruding shims from the door frame.
Once the door is securely in place, install the hardware.
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