https://fakenews.win/wiki/How_....to_Install_a_UPVC_Do
https://securityholes.science/....wiki/Cat_Flap_Instal
Introduce your cat to the flap prior to the installation so that they be familiar with the size and shape. Unlock the flap and let your cat explore it from every angle. Make sure that the cutout is square and even. Mark the screw holes and align them with the cat flap opening. The distance between the edges should be the same. Preparation A cat flap in your home can be beneficial for the health and wellbeing of your pet. It allows your pet to fr