https://output.jsbin.com/tuyeyubozo/ If you wish to let your pet to come and go at their own pace, without opening the door, you can install a cat flap. You should employ an expert to put in the cat flap. They can handle the complexity of fitting different kinds of cat flaps onto different doors and walls. Installation With a cat flap your pet can enter and leave the house at will without you having to open the door. The range of pet flaps available on the market is huge, from microchip-proof and bite-proof doors to fully insulated cat flaps. They are available with a variety of different frames and materials, from plastic or PVC to stainless steel and aluminum. The type of frame you pick will have an impact on the total cost. Plastic and PVC frames are cheaper but are less durable, while stainless steel or aluminum frames are more expensive, but last longer. You should also consider what kind of access you would prefer to grant when selecting the frame for your cat flap. If you wish to limit access to your pet's other animals, you should choose a pet door that is locked. These make use of your pet's infrared microchip to allow them access. These are more expensive than standard pet doors but they're worth the extra cost for security. The next thing to consider is the type of door or wall you'd like to install the flap on. Most commonly, they are installed in doors. However, they can also be fitted into walls and windows. It's best to hire an experienced tradesperson to complete the work. They'll have the proper tools and expertise to ensure that your pet flap is properly fitted. Many homeowners might try to fit the flap themselves however, this could be risky and cause costly repairs later. They may also damage the surface of the uPVC panel or the door they're trying to install the cat flap into. It's usually cheaper hiring a tradesperson do the job to avoid these problems. When you are installing a flap for your cat be sure to be aware that it might take time for