4 TYPES OF LOCKS - (Open, Stop, On/Off, Locked) Four mode cat flap, lock with switch, only turns, inside and outside, fully lockable, easy to control and allows your pet to enter and exit.Animals ; With the pet gate, you no longer have to constantly close and open the gate while waiting for your pet to arrive. PERFECT GLASS DECORATION - Clear design makes it suitable for your windows, perfect for windows, sliding glass doors, glazing; ideal for all glasses; your pets will instantly fall in love with the stylishcat flaps. SIMPLE COMFORT - There are two parts to the cat flap: the door brush dampens door noise and the inner rubber ring protects your cat from damage; silent action will not scare pets or disturbthe owner. Thus, the cat is free to go to its litter box. DURABLE AND CORROSION RESISTANT - All doors are constructed from strong weather resistant ABS plastic for ultimate comfort and ease of use - Sturdy 100% UV resistant polycarbonate construction makes the doorvirtually unbreakable.