Key Features Suitable for Cats and Small to Medium Size Dogs Self Lining 2 Way Lock White colour- blends in with most standard doors Genuine Pet Mate The Medium Dog Door allows your pet to roam around the house and garden without you needing to open the door to let them in or out. With an easy access flap and 2 way lock, you can control whether your pet is allowed in or out of your hose. The Medium Dog Door is a self-lining Dog Flap which is easy to install and gives a generous amount of space for your pets to enter and exit through the flap. The Medium Dog Door is fully brush sealed with magnetic closure to ensure the flap stays closed and keeps out bad weather with minimum energy loss from the house. The Dog Flap also comes with a robust locking security panel and is both strong and lightweight, making them ideal for your pet.