B-Line Eaton series double sided 18 inch shelf width distribution , 108" height, 31.62" length, 18" width, 9 vertical with 12 shelves, ASTM A36 struct

It is the central cross connect field in a telecom or MDF room. The frame supports terminal blocks so incoming outside plant pairs land on one side and station or riser cable lands on the other, with jumper wire run between them. Double sided means blocks mount on both faces of the frame, doubling termination capacity in the same floor footprint, which is why these go in rooms where space is tight and pair counts are high.

Nine verticals and twelve shelves, in the double sided configuration. The verticals are what your terminal blocks mount to and the shelves organize and support the jumper runs between the two sides. Count your required block positions against nine verticals before ordering, since adding capacity later means a second frame rather than more verticals on this one.

What is supplied is the frame itself: nine verticals, twelve shelves, ASTM A36 steel in Telco gray. Terminal blocks, block mounting brackets, jumper troughs, ground bar and floor anchors are separate line items you specify to match your block type and pair count, so build them into the order or the job stalls at install.

ASTM A36 structural steel with a Telco gray powder coat. A36 is the standard mild structural grade, so the frame carries heavy block loads without flex, and the powder coat gives a durable dry-environment finish that matches the Telco gray of most existing MDF ironwork. It is an indoor telecom room finish, not a wet or corrosive location coating.

18 inch shelf width, which is also the overall frame width. That is the dimension to check against your terminal block footprint and against the aisle layout you have drawn, because the 31.62 inch depth is the double sided dimension covering both block faces plus the center structure.