https://world-news.wiki/wiki/C....at_Flap_Installation
A double-glazed cat flap lets your pet to move in and out of the house freely. This can reduce anxiety, enhance their sense of freedom, and encourage active play and exploration. The pet flap hole is cut during the manufacturing process and later fitted into new uPVC windows and doors. However, it shouldn't be fitted into existing tempered glass. Cost When you decide to install a cat flap in your double glazing, it's important to consider the cost of installation. It will depend on the kind of door you select and the amount of