This icon represents an open window. It is a large square with four smaller sqaures on each side. The sqaures on the side are one big on the bottom and one smaller one on the bottom to represent shutters.
This Open Window icon is made in flat color style
. This format was developed by Icons8 designer team and became immensely popular for use in web and mobile applications. Feel free to download this icon in PNG format for free, or unlock other formats for $5. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 6,100 icons, all in the same style and quality.