The #1 AV rack because it is both Forward and Lever Lock compatible providing maximum mounting capacity on and off the rail and a suite of tool-free accessories making rack installations 5Xs faster! 41RU & 27in (686mm) Depth. The 1st Forward Compatible rack. Breakthrough design provides high rack strength without extra weight. Solid sided for system security and to control airflow. Sides have ganging holes if multiple BGR-SAs are needed. Accepts Lever Lock system tool free cable management accessories. The 23in width gives you extra room in "no-man's land" for front-to-back cable management and for mounting small devices on Lever Lock freeing up valuable rackspace. Innovative side lacing on the Forward rear rackrail provides flexibility for internal cabling and accepts the Forward vertical cable management products. Includes standard vented rack rear door that accepts optional fans. Accepts brush grommet rear door kit for a large cable passage without fishing. Wide open rack top and bottom offer many cabling and cooling options. Standard front and rear adjustable Forward Rackrail with numbered spaces.