1. PET PROTECTION This pet door can protect and isolate your pets. It prevents your beloved pets like cats and dogs from escaping outside or reaching dangerous areas. When introducing a furry friend to your family, it can serve as an isolation barrier. 2. REINFORCED MATERIAL Made from steel wire coated with thickened vinyl, it is stronger and more durable than ordinary fiberglass and polyester fibers, and can withstand cat scratches under normal circumstances. 3. GOOD VENTILATION The mesh door allows air to circulate , letting you enjoy cooler air anytime and reducing stifling heat in the summer. At the same time, it also prevents mosquitoes, flies, and other insects from entering. 4. EASY INSTALLATION Attach the Velcro tape to the four sides of the pet gate, then peel off the white adhesive backing and stick the pet gate to the door frame without any tools. It is suitable for sliding doors, patio doors, balcony doors, greenhouse doors, main doors, etc.