It is a commonplace nowadays to employ fiber optic cabinets in data centers and other modern IT installations alike. Humble as the appearance is, fiber optic cabinet actually plays a significant role in security and regulatory compliance, configurability, cooling and efficiency, as well as system availability. Moreover, it also helps to save much more space which is considered to be vital and precious for data centers. In this article, we will discuss how to choose a right fiber optic cabinet that better fit your expectation. Generally speaking, a fiber optic cabinet is a closed frame, specifically designed for holding monitors, servers, various networking equipment, electronic components, measuring instruments and other similar devices. Most commonly, the fiber optic cabinets are installed for storing network equipment and servers. The fiber optic cabinets provide an easy access to the networking equipment while enabling airflow, and they keep the working space well-organized. Fiber optic cabinets are widely and intensively adopted to server rooms and data centers, audio/video installations, closets housing telecommunications equipment, and industrial environments such as a factory floor. Basically, there exist two types of fiber optic cabinets in terms of different working conditions and requirements: floor standing cabinet and wall mount cabinet. If access control and equipment protection are important to you, floor standing cabinet is proved to be a desirable choice. While wall mount cabinet are ideal for securely housing IT equipment in classrooms or sites with limited floor space. Since the fiber optic cabinet come in different sizes, when choosing a specified cabinet for your infrastructure, you should at least take two factors into consideration: type of equipment to be stored inside and amount of space that is required. Be sure to make an accurate assessment of the amount of space you currently need, and allow for future growth. In addition, before installing the fiber optic cabinet, you need to make sure that the equipment to be placed in will match the cabinet. So the maximum rack depth required to mount your equipment should be taken into account. The rack depth of floor standing and wall mount fiber optic cabinet is different. IT infrastructure continues to expand and the need to organize, secure and cool servers, routers, and hubs is continuously increasing. Meanwhile, conserving space for future growth becomes more critical. All of these make fiber optic cabinets an essential application in cutting-edge data center worldwide.