https://longshots.wiki/wiki/Ca....t_Flap_Glass_Door_In
A double glazing cat flap lets your pet to go inside and out of the home without restriction. This can help to reduce stress levels, boost their sense of freedom and encourage exercise and exploration. The pet flap hole can be cut during manufacture and fitted into new uPVC doors and windows. It is not recommended to install it in existing glassware that is tempered. to take into consideration the installation cost when deciding whether to install a cat-flap in your double glazing. This will depend on the kind of door