The dimension (LxW) of the thru back cutout holes are 75x37.5mm. About the capacity of this cable manager, 124pcs 24AWG cat6 cables or 117pcs 26AWG cat7 cables are maximum cable fill, and 37pcs 24AWG cat6 cables or 35pcs 26AWG cat7 cables are recommended cable fill. For more product specifications, please follow horizontal cable manager datasheet. Par F***g le 14/02/2020

Thanks for your question, the material of this cable manager is plastic (ABS). For more detailed information, welcome to contact sales@fs.com. Par F***g le 17/06/2019

Thanks for your question. It can be used to manage Cat5e/Cat6/Cat6a patch cables with high cable capacity. Par C***m le 14/06/2017

Thanks for your question. It's easy to install. You only need a screwdriver to fix the screws on the racks or cabinets. Also FS will attach the user manual or installation instruction in the package for reference. So please don't worry. Par T***a le 21/03/2017

Thanks for your question. This cable manager is RoHS compliant. For more detailed information, welcome to contact sales@fs.com. Par J***e le 21/01/2017

Thanks for your question. The rear holes are for front-to-back cable running. Sometimes, the cables need to be in the back of the cable management for a specific application environment. Par L***s le 02/12/2016

Thanks for your question. Its structure is the same as #29038, only the size is different. It can be installed on the standard racks, occupying 2U rack place. Par P***c le 21/09/2016