https://aiwins.wiki/wiki/Fitti....ng_a_Cat_Flap_in_a_U
Let your cat go inside and out of your home independently by using the cat flap. This allows your pet to move freely and promotes exercise. It also prevents obesity and relieves boredom. Some of them also work on wall installations. They will start by marking the location of the door, then drilling around the corners of the door. How do you install a cat flap A cat flap lets your pet to go outside without you having to open the door or window. This is useful for those who work late, or if you're concerned about your cat being l