https://fakenews.win/wiki/Cat_Flap_Double_Glazing
If you want to install a cat flap inside your home, it is best to work with an expert tradesperson. DIY jobs usually result in a poorly-fitted pet flap which allow draughts and lead to more energy costs. SheffLOCK can install cat flaps on all types of doors, including wood, uPVC composite, glass and even external walls. It takes around 2 hours on average to put in a new cat flap. Cost of the pet flap A pet flap is a great way to let your cat come and go as it pleases. However, if the flap isn't correctly installed, it may allow heat esc