This particular icon is compromised of multiple rectangles that are sitting inside of an oulined square. Each rectangle is positioned to convey that they are the shape of cabinet doors
This is a Template icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.