B-Line Eaton series open racks, Steel, Flat black powder coat, 12-24 panel mounting holes, 38 mounting spaces, Top angle style, Seismic Zone 4, close

The SB5568108FB gives you 38 mounting spaces on a frame 108 inches tall. That's 38 rack units of usable equipment space, so a full-height run of switches, patch panels and servers mounts on one frame without adding a second rack.

Yes. The SB5568108FB is built as a Seismic Zone 4, closed duct unequal flange rack, so it is the version to specify where local code puts the building in the highest seismic category. It is also UL Listed.

The rails are punched with 12-24 panel mounting holes, which are tapped threads rather than square cage nut openings. So you mount equipment with 12-24 rack screws and no cage nuts are needed. If your gear shipped with 10-32 or M6 hardware, order 12-24 screws to match the rails.

Plan for a 23 inch width and 108 inches of length/depth per the published dimensions, with 108 inches of height. The frame itself weighs 107 lb empty, so it is a two-person set and the anchoring and floor loading need to account for the equipment weight on top of that.

An open frame two-post style rack like the SB5568108FB is for secured rooms (a locked MDF, IDF or telecom closet) where you want all-round cable access, free airflow and the lowest install cost. Go with an enclosed cabinet instead if the equipment sits in a shared or public area and needs locking doors, side panels, or containment for airflow or dust. This frame provides no doors or sides, just steel uprights with 38 mounting spaces.

It's the closed duct unequal flange version. The uprights are formed as a closed section with unequal flanges, which gives a stiffer post for seismic zone 4 use and a protected internal path for cable rather than an open channel.

Top angle refers to how the frame is finished at the top: an angle member across the uprights rather than a flat channel top plate. It gives you a surface for attaching ladder rack or runway coming in overhead and ties the two uprights together at the top of the 108 inch frame.

The frame is steel with a flat black powder coat, so it lines up with standard black rack and cabinet finishes rather than a gloss or grey. The powder coat is the durable option for a room where gear gets slid in and out of the rails regularly.