https://telegra.ph/Fit-a-Cat-F....lap-in-a-UPVC-Door-P
https://blogfreely.net/hillhor....se4/cat-flap-install
It is recommended to hire an expert to install a cat flap at your home. DIY projects usually result in poorly-fitted pet flaps that could allow in draughts or raise the cost of energy. SheffLOCK is able to install cat flaps on all kinds of doors, including wood, uPVC composite, glass and even exterior walls. It takes about 2 hours on average to put in a new cat flap. Cost of pet flap A pet flap is an ideal way to let your cat move around at will. If th