https://morphomics.science/wik....i/Using_a_Cat_Flap_i
Cats love to look out of windows, a pastime sometimes called cat TV. It is a form or entertainment that is often instinctive. Glass window inserts that have a cat flap can be installed on windows or doors. They can be fitted in double glazing. Easy to Fit Cat flaps can be installed in all kinds of glass doors and windows that have single glazing, double glazing, french doors and patio doors, bifold doors, and leaded units. These are ideal for people who aren't keen on cutting into a door or wall and need to allow their pe