EASY INSTALLATION: This classic type of cat flap comes with a cutout template and installation guide 4-POSITION LOCKING SYSTEM: With the 4-position locking system, you can choose what’s best for your cat and give them the freedom they crave ADAPTABILITY: Manual Latch Cat Flap easily adapts to Staywell 300 Series Cat Flap cutout sizes ENERGY EFFICIENCY: A durable insulating bead and two magnetic locking points reinforce the insulation and, therefore, offer better energy efficiency ACCESSORIES: Additional extension tunnels are available for purchase for quick and easy installation into thicker walls or doors