https://stairways.wiki/wiki/Ca....t_Flap_Double_Glazin
Double glazing can be fitted with cat and dog flaps to let your pet go and go at their own pace. They also help keep your pet's attention while you are away. You can put in a cat flap into an existing uPVC or double glazing sealed unit. However, you will need a replacement part with a premade opening. This can be done by a glazier who has the appropriate equipment and experience. Easy to install A cat flap is a great alternative to allow your pet to have free access to the outside without you having to constantly open and close your d