Outer size (L x W x H): 23 x 27 x 5.5 cm Inner size (L x W x H): 18 x 19.5 x 5.5 cm It is suitable for cats weighing less than 8 kg and at a waist circumference less than 60 cm. Note: 1). Make sure the width and height (at the shoulders) of the animal are less than the pet screen door, thanks. 2) The magnet at the bottom of the door frame is for align the shutter after movements, it does not work as a lock, thanks. Enhanced Product Features: 1. Convenient button-style switch, you can easily control your chat or other chat in or out options, only at your fingertips. the entrance, at the entrance, at at the entrance and at exit, totally locked. 2. The fixed groove with tongues at; pressure for a weatherproof brush strip greatly helps to fix it. 3. The depth of the tunnel can be reduced, plus 1 pack of long + 1 pack of short screws, double-sided adhesive tape, to meet the requirements of the tunnel. your needs, which install in various types of interior doors, exterior doors, walls,
