https://fakenews.win/wiki/Cat_Flap_Double_Glazing
You and your cat can both benefit from incorporating the cat flap inside your bifold door. It also helps to stop extreme heat or cold weather from entering your home. First, you must take measurements of your pet to determine the size of door flap you need. This will help you design a cat flap hole that is of the right size. Outdoor Access Even those with basic DIY skills can manage to install a cat flap onto an external backdoor. This will save you the expense and hassle of calling an experienced joiner, carpenter or handyman to comple