BGR = Breakthrough Next-Generation Rack This is the "Next Generation" Rack you have been wanting ! BGR-SA series racks have higher weight capacities, provide more useable rackspace, and incorporate more functionality than any other rack system on the market. Features the revolutionary patent-pending LeverLock™ system for tool free installation of cable management accessories. New options include brush grommet rear doors and problem-solving extender bays. Choose a BGR enclosure for the highest level of space efficiency and strength available, and to enable the use of the latest options for installation flexibility. This stand-alone version includes fixed vented side panels. Structural FeaturesBreakthrough design provides more useable rack height - for example, the 45 space version is shorter than 44 space alternative modelsAccepts patent-pending LeverLock™ system accessories for fast, flexible cable management and mounting of small devices such as interface boxes, power supplies, and relay modulesUnique new extender bay adds 3" of useable depth to the front or rear of the enclosure at any time. Extender bays allow the use of existing doors and can even be stacked for greater depthStandard front and rear adjustable wide, heavy-gauge, 10-32 threaded rackrail with numbered rackspace increments speeds equipment mountingWide open bottom accepts multiple base optionsFinished in a durable black textured powder coatThermal ManagementTop options include solid, vented, and thermostatically controlled fan topsStandard vented door accepts optional doorsCable ManagementAccepts LeverLock™ system tool free cable management accessoriesCable entry choices include generous laser knockouts and choice of trade openings and/or grommetted pass-throughsThe generous 21" wide top opening provides for full-width cable and conduit entry, and includes vertical cable entry tie points on both sidesOptional brush grommet rear door kit can be mounted top or bottom to provide a large cable passage with easy access to the cables without fishing