This cat flap door allows you to enjoy your time without being disturbed by your pet while working or resting. 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. The price drops from $13.99 to $11.68. Shipping is free for orders over $35, or it adds $6.99.