https://jsfiddle.net/leekcloud11/j2Lvw6qr/
Cat flaps allow your pet to come in and out as they please without you needing to open a door or window. They are available in a variety of materials and can be installed into windows, doors and walls. A professional tradesman is able to install a cat flap on any door, including composite, wood, and uPVC. Installation Costs The cost of installing a cat flap could differ significantly based on the dimensions, the type and complexity of the task. It is also important to take into consideration the material of the wall or door as this can affect