NAMSAN Pet Screen Door 11″ x 13″ Passing Dog Door Screen Door Magnetic Cat Door for Sliding Door, Easy to Install, Double-Sided Lockable

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Namsan pet screen door made of quality ABS material, durable and sturdy. Hanging hinge design made this screen dog door swings both ways freely last for a very long time. Magnet slows the door down and stops it in place after 4-5 times sway.
Inner Size 12″ x 16″, Outer Frame13.8″ x 18″, fit most pets like dogs, cats, rabbits, pet pigs, but not really useful especially little kittens and puppies because this door is too large.
Only for existing screen door, porch, window or some other screen areas, but can not be used for thick wooden, iron/aluminum doors, walls. It does not come with the screen insert, you want to put the cutting-out existing door screen between the door flap when installing.
Use a flat-head screwdriver to separate doggie door so you’ve 4 parts(frame, flap) and cut down 2 black tabs. Tabs can push one into a hole on one side to lock the door to stop pets go out and in, double-sided slots lockable.
Apply the glue inside doggy door frame to fix it right through installation, but the package does not come with the glue, really useful purchase Gorilla Glue. Whether you find yourself the usage of glue or not, you will have to use 4 zip ties (provided) to hold the outer frame top and bottom to keep the door from separating and falling.