Interactive 3D model of the CRISTAL 50 swing door. Rotate the product in the browser and view the details from any angle to evaluate the design before ordering. What can be seen in the 3D model of the CRISTAL 50 door from any angle; design of the canvas and box; proportions and details of the product. Questions and Answers Is it possible to zoom in on door details? Yes, the 3D model is scalable - the CRISTAL 50 door can be seen close-up. Do I need to install anything? No, the model opens directly in the browser on any device. Open the 3D model above and view the CRISTAL 50 door online.