Available options: color: black and white.. Safe and neat: the transparent door allows pets to see through the door. The external rain seal serves to waterproof it. The brush strip eliminates the sound of closing the door. The 4-way smart door control gives the cat maximum freedom. Inner edge of the structure in polished chrome, so that it is not damaged. 4-way opening mode: The swing door can be customized with 4 opening modes: external, internal and external and completely closed. Give the cat all the freedom you want. Easy to install: The nails and mats included in the set make it easy to install on windows, doors, cabinets, panels, walls, etc. Excellent Quality: Made of weatherproof ABS material, the surface is smooth and durable. Outer Frame Dimensions S: 20192cm M: 20195.5cm L: 25 * 23.5 * 5.5 cm XL: 27, 7255.5 Door frame interior dimensions < b> S: 1615.7cm M: 1615.7cm L: 1918cm XL: 22??20cm Installation Instructions < b> 1. Draw an outline on the