Cat Door, Safety Pet Door with 4 Way Lock, Weatherproof & Easy Installation Cat Flap Door for Interior Exterior Door, Window, Wall(Medium, 15cm x 15.5cm Flap)

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.
Safer with 4 Lock Modes - By slide the switches, you can adjust the access mode to Free In & Out, Fully Locked, Out Only, In Only, control your pet’s access and keep away stray animals.
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.
Medium Size & Versatile - With 19cm x 20cm outer size, 15cm x 15.5cm flap,this pet door is for cats and small dogs with waist circumstance shorter than 40cm. Perfect for interior and exterior doors of wood, PVC, metal, paneled, glass etc. It also can be installed in windows, wall, cat litter box etc.
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.