https://scientific-programs.sc....ience/wiki/Fitting_a
Adding a cat flap to your door's panel is an essential task that should be carried out by an experienced professional. The doors are typically made of a flimsy plastic exterior that is bonded to a soft insulate polystyrene. It can be difficult to cut through these materials. It's much simpler to install a cat flap into an existing pane of glass or have a new door made with the hole already drilled. A glazier can be in a position to assist you. Easy to install Upvc door panels are a great option if you have a pet cat and want t