Feature: 【Convenient】: This pet door is specially designed for sand umbrellas or mosquito net doors , so your pet can come and go. They are very practical and can be used indoors or outdoors, giving your puppy or cat maximum freedom. 【High Quality】: Made of high quality ABS , screw reinforcement makes our pet door strong enough, smooth surface, anti-fouling, wear-resistant, corrosion-resistant, no deformation, anti-aging, anti-scratch, longer service life use Vitality vitality. 【Automatic Closing & Locking】: Built-in magnetic flap that can be closed automatically. The door closes automatically when the pet leaves. You can even close the door to keep pets from going outside at night or when you're not home. If you are looking for a pet window door and want to create a nice passage for your cat or dog, this is a great choice. 【Safety】: High-quality nylon mesh (prevents insects, flies and other insects from entering) , filters dust and dirt into the room, provides better ventilation in the home and reduces pet odor. The frame has smooth edges to avoid pets scratching. Specification: Color: black Material: plastic magnet Frame size: 29 x 24 cm Inner frame size: 26*21cm Travel door size: 26 cm x 20.5 cm Packing list: 1 * screen pet door 10*bolts