Give your Pet the Freedom to Come and Go Let the door do the work! This durable pet door gives you and your furry paw the freedom you both deserve. Free To In-and-Out With the 4 Way Locking Flap Door , you can control your pets in home independently! It's so handy to free your hands from opening the door for your pets when going in and out! Your dogs can live a more free life. Features: 1. Flexible transparent flap; 2. Silent action; 3. Sturdy magnetic bar at lower end of flap keep door in place; 4. Lockable with removable rear panel which protects against wind and bad weather; 4 Size Available 1.S Frame Size: 14.57" x 9.45" x 1.57"(H x W x D); Opening Size: 14.96" x 10.24"(H x W). 2.M Frame Size: 18.11" x 11.02" x 1.57"(H x W x D); Opening Size: 14.96" x 9.25"(H x W). 2.L Frame Size: 18.11" x 12.6" x 1.57"(H x W x D); Opening Size: 14.96" x 10.24"(H x W). 4.XL Frame Size: 23.23" x 16.93" x 1.97"(H x W x D); Opening Size: 19.88" x 14.96"(H x W). Package 1 x Pet Flap Door