B-Line Eaton series imperial cable tray and ladder, 6" Height, 39" Length, 36" Width, Series 2-5 vertical tee down, Aluminum, 36" Radius

It is a three-way aluminum fitting that takes a straight cable tray run and drops a branch vertically downward while the main run continues. B-Line calls it a Series 2-5 vertical tee down. You use it where cables have to leave the horizontal run and head down to equipment, a wall drop, or a lower tier, without cutting and field-fabricating the tray.

Allow 39 inches of length along the run for the fitting itself, plus the 36 inch radius sweep of the drop leg below the main run. On a congested ceiling that vertical clearance is usually the constraint, not the horizontal. If you cannot give up the drop depth, a smaller radius fitting is the alternative, as long as your cable bend radius allows it.

It weighs 57.8 lb bare, before any cable. A 36 inch wide aluminum fitting at that weight is a two-man lift on a lift or scaffold, and NEC practice is to support the tray within a short distance on each side of a fitting rather than letting the fitting hang off the straight sections. Add the loaded cable weight of the drop leg on top of that when you size hangers or trapeze steel.

Aluminum. It is the usual choice where weight matters on long support spans and where corrosion resistance is wanted without galvanizing or paint, including damp indoor and many outdoor runs. Keep the whole run in one material where you can, since mixing aluminum tray with steel fittings brings dissimilar-metal contact at every splice.

The manufacturer part number is 6A-36-VT36. Reading it out: 6 inch rail, aluminum, 36 inch tray width, vertical tee with a 36 inch radius. Splice plates and hardware are ordered separately from the fitting, so include those for each connection point when you build the order.

It carries CE marking. That is the only marking recorded for this fitting.