Your pella sliding door has a built in latching mechanism that extends into the lock strike when you place the latch in the locked position.
How to adjust lock on sliding door.
Adjust sliding glass door lock handle is using a putty knife remove the strike plate to access the adjustment screw.
If it s too low use a flat pry bar to raise the door while you turn the adjusting screw clockwise.
Regular vacuuming of the track will help keep the door sliding smoothly.
The lock will not engage if the engagement tongue goes above or below the logo.
If a patio door is difficult to operate won t lock properly or is loose or drafty make adjustments to the roller latch or strike to fix the issue.
Download instructions for more information.
This video will show you how to properly adjust the lock and handle on your milgard sliding glass door.
If you find that the engagement tongue is going above or below the logo you will have to adjust the lock.