That lock will engage a bracket mounted on your sliding glass door above your existing lock and locks the sliding door to the pet door.
Patio panel pet door installation.
This fourth best patio pet door for dogs includes an extra large panel door with a flap opening size of 13 inches x 23 inches.
Measure 1 above the pet door in the patio panel and mark on the sliding glass door frame.
3b to install the patio panel into an exposed sliding glass door frame fi nd the patio panel center at top and mark on the sliding glass door frame.
How to install your petsafe patio panel pet door.
Panel pet doors designed for a semi permanent installation only will have a lock built into the pet door that you will use instead of the lock on your sliding glass door.
Measure 12 from the top down the side of sliding glass door frame and mark.