B-Line SB5763108YZ Eaton series open frame racks, Steel, Yellow zinc, 12-24 panel mounting holes, 45 mounting spaces, Top channel style, Seiemic zone 4, network bay open duct rack

The SB5763108YZ is built as a seismic zone 4 network bay open duct rack, so it is the version to specify where the structural drawings call for zone 4 anchorage. It is also UL Listed. Anchor it to the slab per the engineer's detail, since a seismic rack only performs to its rating when the floor attachment matches.

Top channel style means the frame is tied together across the top with a channel, which gives you a structural run to land ladder rack, cable runway, or overhead duct on top of the bay. That is why it is called a network bay open duct rack: it is meant to be ganged into a row with cable pathway carried across the tops. A plain two-post frame without the top channel is a cheaper choice if you are mounting a few devices and running cable from below.

The part number is SB5763108YZ, an Eaton B-Line series open frame rack, steel with yellow zinc finish, 19 inches wide, 108 inches tall, 45 mounting spaces, 12-24 tapped rails, top channel style.

The rack weighs 126 lb bare and stands 108 inches tall, so it is a two-person set at minimum, and realistically a lift and brace job because of the height. Stage it lying down, get the base anchors started, then stand it.

Yellow zinc over steel is a plated corrosion-resistant finish, standard for telecom and electrical rooms and for bonding, since plated steel gives you clean metal-to-metal contact for a ground bar or bus. If the room is a finished or customer-facing space where a black painted rack is specified for appearance, this is not that product.