Namsan is dedicated to researching pet supplies, this pet screen door is authorized by Namsan, which made of quality ABS material, durable and sturdy.
Install the attached screw with nut to this doggie door frame will more sturdy enough and never fall down easily, the door flap can be replaced anytime.
Built magnetic into the door flap can keep automatically closing when your dog sliding the screen door, even you lock the door by the 2 side blue lock when you want to prevent your pets go out.
Only install this pet door into interior/exterior screen door, window and any other screen areas, can not be used for very thick wooden doors, iron/aluminum doors, walls. Installation manual attached, easy to install.
Inside flap opening size 8 x 10 inch, outside frame size 9.4 x 11.4 inch, suitable for small dogs, cats or other small pets go in and out freely, not recommend for medium to large dogs.