Cat flap suitable for wooden doors from 11 to 25 mm thick.The generous 180 x 241 mm flap is suitable for large cats and small dogs. ADAPTABILITY: The different Catwalk models can be adapted to all types of door (thicker or thinner, wooden or glass) and to different sizes of pet.TRANQUILITY: The 4-position locking system – entry only, exit only, free entry and exit, complete locking – allows the pet to move freely and gives the owner peace of mindesprit. RELIABILITY: Made from high-quality materials.