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A popular option for homeowners, a composite cat flap is an unsecure entry point for your pet. It also reduces the likelihood that unwanted animals will gain access to your home. But adding a cat flap to your composite door requires expertise and knowledge of the door's structure. Any structural modifications could compromise its strength and impact its thermal performance. Include a cat flap to a composite door A cat flap lets your pet to go in and out of the house without letting other animals or cats