https://nicholson-jacobson.mdwrite.net/fitting-a-cat-flap-1730319911 https://blogfreely.net/yogurtcare0/cat-flap-installation-into-glass https://jsfiddle.net/kxmns5L3/ Double glazing can be fitted with dog and cat flaps to let your pet leave and come at their own pace. They also help in keeping an eye on your pet whilst you are away from home. It is possible to install a cat flap into an existing uPVC panel or double glazing glass sealed unit, but you'll need to replace the piece with a hole that is pre-made. This can be done by a glazier who has the appropriate equipment and experience. Easy to install A cat flap is an excellent alternative to allow your pet to have access to the outside without you having to constantly shut and open your doors. There are a range of options for dog and cat flaps as well as ones designed to fit inside double-glazed windows and doors. They can be fitted to french and bifold doors as well as patio doors. They also come in a wide range of sizes, meaning you can choose the best one for your requirements. A cat flap glazier who is competent will be able to provide advice on which pet flap is the best fit for your door, and also discuss the different options available. They will take measurements of your window or glass door, and then design an entirely new pane that has a hole pre-cut for the flap. The panel will be replaced in your glass door, making sure it is a seamless fit. The process can take anywhere from four to five days from the time it is measured. You can also put in a magnetic pet flap that reads the microchip in the collar of your pet. This means that only your pet can use the flap and pets and other animals will not be able to enter your home. However, they are not suitable for double-glazed doors containing metal (even some UPVC units have hidden reinforcing steel) and are easily hacked by burglars. When choosing a cat flap that will fit your double-glazed doors, it's important to choose one that is weatherproof and secur