https://jsfiddle.net/cubansquid7/78vouzw0/ Cats enjoy watching out of windows. This is sometimes called cat television. It is a type of entertainment that is often instinctual. Glass window inserts that have an enclosed cat flap are fitted to doors or windows. They can be installed in double-glazed. Easy to Fit Cat flaps are fitted in most types of doors and windows made of glass that have single glazing, double glazing, french doors and patio doors, as well as bifold doors and leaded units. They are great for people who do not want to cut through their walls or doors to allow access to their pet through the window. But, you must be aware that putting a cat flap into a glass door or window is not something that can be accomplished without the assistance of professional glaziers. Whether you choose to install the cat flap in an existing door or a new window or door, it will need to be made of toughened safety glass for security reasons. This means that it cannot be cut, and you will require a new pane of glass with a hole that has been cut for the cat flap. A glazier visits your home to measure and then install the new pane. They will ensure that there is a secure enough gap to keep burglars and other cats from entering. It is also an ideal idea to put the sensor close to the hinge of the catflap so that it must open at a reasonable distance before it triggers. This will help to prevent any swings that could trigger it and will prevent your cat from moving its paws across the flap in order to gain access. Installers may have to take down the sash-window prior installing a cat flap. They will also need to determine if the location is suitable to install a pet flap. The older styles of sash windows which use putty instead of beading, aren't suitable for a cat's flap because they are too narrow and have little space between the two glass sections. It is a good idea, once the installation is completed, to lock the catflap using bolts or latches. This will stop your pet f