B-Line Eaton series open racks, Steel, Yellow zinc finish, 12-24 panel mounting holes, 45 mounting spaces, Top angle style, Seiemic zone 4, network b

The SB5766084YZ gives you 45 mounting spaces on an 84 inch tall frame. That is enough for a full network bay of patch panels and switches without stacking a second rack. Plan your panel layout against 45 spaces, not the usual 45U assumption, since the count is what the manufacturer states for this frame.

The mounting rails are punched with 12-24 panel mounting holes, so panels and equipment mount directly with 12-24 rack screws. No cage nuts or square-hole hardware. If your switches and patch panels came with square-hole cage nut kits, you will need 12-24 screws instead.

Yes, the SB5766084YZ is built as a seismic zone 4 network bay open duct rack, which is what a hospital, data center, or California telecom room spec typically calls for. It is also UL Listed. The frame is ASTM A570 grade 33 steel.

Footprint works out from a 23 inch width and 84 inch depth figure, with the frame standing 84 inches tall. Lay out your aisle and conduit runs around that, and remember an open rack has no doors, so you do not need door swing clearance the way you would with an enclosed cabinet.

The rack itself weighs 118 lb empty. That is a two-person carry up a stairwell or into an elevator, and it is the baseline number to add your equipment weight to when a structural engineer reviews the floor loading for a seismic anchored install.

An open frame rack such as the B-Line SB5766084YZ leaves all four sides accessible, which is what you want in a secured telecom or IDF room where cable access and airflow matter more than physical security. Go with an enclosed cabinet instead when the rack sits in a shared or public area, or when you need dust control and lockable doors. This one is a network bay open duct rack, so it is built to bay together with vertical duct for cable management.

Yellow zinc is a plated corrosion-resistant finish over the steel frame rather than a paint coat, and it is a standard choice for indoor telecom and electrical rooms. If your spec calls for black powder coat to match existing racks in the room, this one will not match visually.

Top angle refers to the angled top member of the frame, which is what ladder rack and overhead cable runway typically land on and bond to. If your design routes cable tray across the top of the bay, this style is the one that accepts it; a flat top plate style does not give you the same attachment.

ASTM A570 grade 33 is a structural hot-rolled sheet steel grade, and it is the material the frame is fabricated from for this seismic zone 4 rack. Combined with the UL Listing, it is the material callout most institutional and government specs are looking for when they name a steel grade on the drawing.