Medium Cat Door for Interior/Exterior Door

CONVENIENT LOCK --- The knob-style switch is 4 way rotary, you can easily rotate it to 4 modes with the arrow and icons to control your cat's access options: in only, out only, in and out freely, totally locked
IMPROVED WEATHER-PROOF BRUSH STRIP --- The fixed groove with snap tabs holds the brush strip securely. It helps reduce noise and keeps out rain, wind, and pests
THOUGHTFUL SCREWS --- Includes 16 screws (8 short, 8 long). Use a mix of both to avoid cracking. Adjust the screws based on the depth of your door or wall
EASY TO INSTALL --- Comes with step-by-step instructions and installation presentation video for you reference. Take care of notice and prepare necessary tools, Cut the tunnel to fit your installation needs
MEDIUM SIZE --- Outer dimensions: 7.56" x 8.46" x 2.17". Inner dimensions: 6.18" x 6.30". Fits cats with a waist under 15". It fits to being installed to interior doors, exterior doors, walls, windows, cupboards, etc