ABS Plastic Pet Door Dog Cat Flap with 4 Way Lock Security Small Safety Gate for Kitten Puppy

S: 272g ，Single product packaging size：20.3*20.3*2.5cm M: 338g，Single product packaging size： 20.7*20*6cm L: 467g，Single product packaging size：24*26*6.2cm XL: 544g，Single product packaging size：28.5*25*5.7cm S: Outer door frame size ：19 x 19.7 x 2 cm ， Inner door frame size ：16 x 15.7 cm M: Outer door frame size ：19 x 19.7 x 5.3 cm ， Inner door frame size ：16 x 15.7 cm L: Outer door frame size ：25 x 23.5 x 5.3 cm ， Inner door frame size ：19 x 18 cm XL:Outer door frame size ： 25 * 5.5 * 27.7 cm ， Inner door frame size ：22 * 20 cm Installation method: Required tools: Electric drill bit, iron saw or electric saw, measuring ruler. Step 1: First, draw the dimensions of the door cover on a piece of paper (there might be a few millimeter discrepancy). Step 2: Place the drawing on the door and mark it out. Then, use a pencil to make the imprint. Step 3: At each corner of the drawn door, first drill a hole using a drill bit. If an electric saw is available, proceed to cut out the hole directly. Step 4: If it is a glass door, use a glass-cutting tool to gently cut it open and then fix it with glass adhesive. Step 5: The hole has been drilled. Now, we will cover the perimeter of the hole with a layer of wood veneer for aesthetic purposes. Step 6: Install the cat door. It comes with accessory screws. Use a screwdriver to tighten them. Step 7: The screw thread is also equipped with a screw cap. Just attach it and it's done! [Important Installation Tips] Warm reminder regarding the opening dimensions of the product Thank you for choosing our product! To ensure a smooth and error-free installation process, please pay close attention to the following matters: Do not drill the hole in advance!!! We have provided you with an exclusive cat door hole positioning template (sent out simultaneously with the product). The template has been precisely designed to accurately match the product structure and installation requirements. Before receiving the product and the template, do not measure or drill the hole by yourself. Otherwise, it may cause deviation of the hole position, make the product unable to be installed or affect the usage effect.