Cat Door, Safety Pet Door with 4 Way Lock, Weatherproof & Easy Installation Cat Flap Door for Interior Exterior Door, Window, Wall (L)

• Durable & Comfortable - Made of sturdy ABS plastic, the cat door interior door is ready to serve your pets for long time. With sealing well strip, magnet for aligning, it can keep away bugs and the smell of cat litter, reduce the loss of cold air in summer and the loss of heat in winter.
• Freedom & Convenience - Through the great cat door, your cats or small dogs can go in and out easily and quietly. They won’t feel trapped and you no longer bother to open or close the door for them.
• 4 WAY SWITCH MODE --- The pet door could be adjusted by the Red and Green switches with tabs to 4 modes: out only, in only, both in and out, and fully locked, easy control of your pet's in and out.
• Easy to Install - The cat door for exterior door comes with detailed instructions, 8 screws and their caps, double-sided tapes. After the necessary tools are ready, you can DIY easily. In addition, the tunnel depth can be cut on demand.
• SAFE & THOUGHTFUL --- The transparent flap let pet see through the door. Exterior rain seal is for waterproof. Brush strip eliminates noise from the door closing.

Step 1: Stick the REAR panel on the door with double-sided tape, and use a pen to draw around the OUTSIDE of the tunnel part of the rear panel. Step 2:Remove the rear panel and use an electric saw to cut out a tunnel hole on the door or wall. Step 3: Put the cat door into the tunnel hole. Step 4: tighten the screws with a screwdriver, then add the screw caps. Tips: Determine whether to drill holes for screws according to the material of the mounting surface.