https://pediascape.science/wik....i/Using_uPVC_Cat_Fla
A cat flap lets you to give your pet more freedom while saving you the hassle of having to let them in and out. It will also help your pet feel less stressed and stop them from entering the house when they're not wanted. To install a cat flap in your door, measure from the bottom of their stomach to the floor, and draw a line on the door panel. Check that the line is level with an ad hoc level. 1. The type of door It is best to consult an expert to install a cat flap into an uPVC or double glazing glass sealed unit. They c