. APC sets the standard in its industry for quality innovation and support. Its comprehensive solutions which are designed for both home and corporate environments improve the manageability availability and performance of sensitive electronic network communications and industrial equipment of all sizes. The mission of APC is to improve the manageability availability and performance of information and communication systems through rapid development and delivery of innovative solutions to real customer problems.PRODUCT FEATURES Covers open rack space to ensure proper airflow;Occupies 1U of rack space;Promotes Proper Airflow;Tool-less mounting;Vertical Mounting Rails with square holes..