https://securityholes.science/....wiki/UPVC_Door_Panel
Double glazing can be equipped with flaps for dogs and cats to let your pet go and go as they please. They also help in keeping an eye on your pet whilst you are away from home. It is possible to fit a cat flap into an existing uPVC panel or double glazing glass sealed unit, however you'll need a replacement piece with a premade hole. This can be accomplished by a glazier who has the proper equipment and skills. Easy to install Having in your home is a great way to allow your pet free access to the outdoors without having