This PetSafe magnetic cat flap Deluxe 400 will give your cat a free pass to enter or leave the house even when the door is shut and helps to keep stray cats outside. Put the included magnetic collar key on your cat, which will unlock the cat flap for your cat! This PetSafe pet flap was formerly known as the Staywell pet flap. It is suitable for cats of up to 7 kg. The Staywell magnetic cat flap has a 4-way security lock (locked, open, in-only and out-only) and a weather-resistant flap closure for greater control of cats access to your home. This energy-efficient cat door is easy to install with its universal fitting for windows, walls and doors of up to 5 cm thick. When the door is more than 5 cm thick, you can add more tunnel extensions. when children are present in the home,,it is important to consider the pet door during child proofing activities,the pet door may be misused by a child resulting in the child accessing potential hazards that may be on the other side of the pet door. P