The icon resemble a three dimensional square shape with curved corners and a hollow center that is also the same shape. The square has two horizontal lines running through the middle top and middle bottom of it.
This is the OpenStack icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.