https://dev.to/leadfamily79/up....vc-door-panel-replac
A through wall cat flap is a great option to let your pets move around whenever they want. But, you should be careful not to install it too high in the wall. This can cause the loss of energy and also allow burglars to break into your home. If you are planning to sell your house in the near future having a hole in a cavity wall could be an issue for new owners. Glass cat doors offer an alternative that is safer. Easy to install A wall-to-wall cat flap lets your cat to come and go as it pleases. It is easy to install,