https://www.geshemtech.com/products/4u-rackmount-pc/ IPC-GS8410 Compatibility: with guide rails and extraction aids; Reinforcement of the whole custom rackmount pc: reinforcement bars are pressed on both sides of the case, which largely increases the strength of the case; Convenient opening of the lid: the rear of the case lid is opened with a grip position to facilitate the pulling out of the lid;All Rights Reserved