It is best to employ an professional to install a cat-flap inside your home. DIY projects typically result in poorly-fitted pet flaps, which can let in drafts and result in more energy costs. SheffLOCK can fit the cat flap into all kinds of doors, including wood composite, uPVC and glass https://cat-flaps-for-french-door80602.mdkblog.com/36436407/how-much-does-a-cat-flap-cost