B-Line Eaton series open racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 38 mounting spaces, Top channel style, Seismic Zone 4, net

The SB5853108TG is built as a Seismic Zone 4 network bay closed duct rack, Zone 4 being the most severe of the legacy seismic zones. It is also UL Listed. Zone 4 construction only holds up if the base is anchored to the slab and braced per the engineered detail on your drawings, so the anchorage still has to be specified by whoever stamps the job.

Footprint works out to 19 inches wide by 108 inches on the length/depth dimension given for the frame. Width of 19 inches is the standard EIA rack width, so it lines up with standard panels and equipment. Confirm your aisle and service clearances on top of the frame footprint itself.

You get 38 mounting spaces on the 108 inch frame. Each space takes one rack unit of gear, so a full bay of 1U patch panels would be 38 panels, or fewer if you are mixing in switches, rack shelves and horizontal cable managers. Leave spaces free for vertical growth if this is a network closet you will be adding to.

An open frame like the B-Line Eaton SB5853108TG gives you all-around access to terminations and the best natural airflow, which is why it is the norm in telco and network closets where the room itself is secured. Go to an enclosed cabinet instead when you need lockable physical security, dust protection, or fan-forced cooling for dense server loads. In a shared or public-access space, the open frame leaves your cabling exposed.

Shipping weight on the SB5853108TG is 87.45 lb. That is manageable for two people to walk in and stand up, but at 108 inches tall it is awkward for one, and it is not freestanding until it is anchored. Bring a second set of hands and have your floor anchors ready before you raise it.

What is defined here is the frame itself: steel open rack, Telco gray, 12-24 tapped rails, 38 mounting spaces, top channel style. Floor anchors, vertical and horizontal cable managers, ground bars and mounting screws are separate items you order to suit the closet. Budget them into the same order so the bay is complete when the crew shows up.

Top channel construction puts a channel across the head of the frame, which is what you land overhead cable runway, ladder rack and sway bracing on. In a Seismic Zone 4 install that top connection is part of how the bay is restrained, so if you are ganging several frames into a row the top channel is what ties them together.

Frame steel is ASTM A570 grade 33, and the finish is a Telco gray powder coat, the standard color for central office and network closet equipment, so it matches existing telco bays and cable runway. Powder coat also holds up better than paint against handling scuffs during install.

Order it by Eaton B-Line model SB5853108TG. That number covers the 108 inch, 19 inch wide open frame in Telco gray with 12-24 rails and 38 mounting spaces, Seismic Zone 4 closed duct network bay.