https://elearnportal.science/w....iki/Cat_Flap_Cover_F
You'll need to hire an installer for your cat flap if you want to install an animal door on your uPVC or glass panel. They can also help with more advanced models, such as microchip pet flaps. DIY attempts to install a pet flap often cause problems like draughts or low energy efficiency. A professional tradesperson will save you the trouble and expense of dealing with these problems. Cost There are a number of factors that influence the price of installing a cat flap. The type of flap you select, the surface you want to instal