This is a large image in a small frame. It should be large enough to fit most screens.
2160 x 1446
Drag the desired thumbnail image to your desktop. From there, you can open it in Photoshop or other software and save it to the computer folder in which you keep your screen saver/desktop images. Once the image is in the proper folder, you can select it as your desktop image or screen saver.
Right click image. Set as wallpaper. Position: Stretch.