Size: Outside 42cm (H) x 37cm (W), inside 36cm (H) x 31cm (W). Suitable for medium-sized dogs, please measure your pet’s size and compare with the door size before purchasing. Give your pet independent passage: Soft magnetic closure allows your pets enter and exit freely without pressure, the flaps close automatically after stepping through the door. Lockable: Two sliding latches on the bottom of the flap help you lock the dog screen door, ensure Make sure your pet stays inside the house when unsupervised. A built-in magnet will automatically close the door after your pet leaves. Material: Ultra-hard ABS material and the screws will fix the dog screen door firmly; Indoor firm tree hung with screen door frame; the inserted wire mesh makes the flap anti-scratch; the cute paw design brings more fun to your home. Easy installation: you can install this pet door on a screen door, window and any other screen area you like, the included pet door package with screws and manual Product