You'll need to hire an installer for your cat flap for installing a pet door inside your uPVC or glass panel. They can also assist you with more advanced models, such as microchip pet flaps. DIY efforts to put in pet flaps often go wrong and can result in issues https://cat-flap-fitting-near-me70411.shoutmyblog.com/30150152/how-much-does-a-cat-flap-cost