General description The Large Cat Flap 4-Way Locking Cat Door in black is designed to provide your pet with controlled access to your home. This versatile cat door features a rotary switch that allows you to manage your pet's entry and exit easily. Technical specifications Material: ABS door material, acrylic outer frame Color: Black Weight capacity: Up to 16 kg Recommended waist circumference: Less than 60 cm Installation Tools needed: Drill, hacksaw or electric saw, measuring ruler 1. Draw the size of the door cover on a piece of paper. 2. Mark the door with a pencil based on your drawing. 3. Drill holes in the four corners of the marked area and cut out the hole. 4. Clean the edges of the hole and wrap it with wood leather for a finished look. 5. Fix the cat flap using the provided screws and screw cover. 6. For glass doors, use a glass scribing tool to cut carefully while securing with glass glue.