B-Line Eaton series open racks, 4.2" height, 5.2" length, 23" width, Steel, RCM rack mounted horizontal cable manager, Plastic finger, Flat black pow

Yes. The Eaton B-Line RCM horizontal cable manager, part SB87023D2FB, is built to provide a horizontal pathway on a two-post rack. Its overall width is 23 inches, which is the full flange-to-flange width of a standard 19 inch EIA rack, so the mounting holes land on the rack's 19 inch rail pattern and the panel spans the opening.

It stands 4.2 inches tall, which works out to just under 2.5 rack units at the standard 1.75 inch RU. Plan on 3U of clear panel space between your patch panels or switches to drop it in without fouling adjacent gear.

A back cover is an option, not included. The manager ships with its mounting channels provided, so the rack-attachment hardware side is handled, but if you want the bundle concealed behind a cover you order that separately.

Depth is 5.2 inches. That is the projection you need to allow in front of the rack face for the finger bundle, so check your aisle clearance and cabinet door swing if the two-post rack sits inside an enclosure.

Both, and the split matters. The body is 14 gauge steel with a flat black powder coat, and the cable fingers are black plastic. You get a rigid steel channel carrying the load on the rack with plastic fingers that won't chafe jacket insulation the way a bare steel edge can.

Different jobs. This RCM unit is a horizontal pathway, so it belongs directly above or below a patch panel to take the short jumper runs across the rack face and hold bend radius at the panel. Vertical managers handle the trunk of cable travelling up and down the rack side to the ladder rack or floor. On a busy two-post rack you normally use both: horizontal at each patch panel, vertical on the rack uprights.

Order Eaton B-Line SB87023D2FB. That is the 23 inch wide, 4.2 inch high, 5.2 inch deep plastic-finger RCM horizontal manager in flat black. Single configuration, so there is no finish or size suffix to specify.

Finish is flat black powder coat on the steel with black plastic components throughout, so it reads as a flat (not gloss) black alongside typical black rack gear. If your existing openings were specified in the same Eaton B-Line flat black, this matches.

It weighs 4.9 lb, so a single tech mounts it one-handed while starting the rack screws. Rack screws are not called out as included, so pull from your own 12-24 or 10-32 stock to suit the rack rails you are fastening to.