This is the Wykres słupkowy 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.
This icon looks just like a bar chart, but uses only three rectangles of various heights. The rectangles are ordered from left to right with the middle sized one on the left, the shorter one in the middle, and the taller one on the right.