There is a square. Within the square are 16 more tiny squares, all the same size. There are four squares across and four down. The square is filled with the other little squares.
This Grid icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,700 icons, all in the same style and quality.