This looks like three rectangles on top of each other. The very top one is smaller and longer. The two bottom ones have a line in the center of them, going horizontal. There are two tiny squares on the bottom of the bottom rectangle, on the edges.
This Bureau icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.