https://articlescad.com/window....-with-cat-flap-54468
Double glazing can be fitted with flaps for dogs and cats to let your pet leave and come at their own pace. They are also great for keeping an eye on your pet whilst you are away from your home. You can put in the cat flap inside an existing uPVC or double glazing sealed unit. But, you'll need a replacement part with an opening already made. This can be accomplished by a glazier equipped with the appropriate equipment and experience. Easy to install A cat flap is an excellent option for allowing your pet to have access to the out