https://lovewiki.faith/wiki/Ad....ding_a_Cat_Flap_to_Y
It is recommended to hire an expert to install a cat flap inside your home. DIY jobs usually result in poorly-fitted pet flaps, which can let in drafts and result in higher energy bills. SheffLOCK can be fitted as a cat flap on all kinds of doors like wood composite, uPVC, composite, glass doors as well as exterior walls. On average, it takes around 2 hours to install the cat flap. Cost of the pet flap A pet flap is a great way to let your cat move around at will. If is not correctly installed, it may allow heat escape