B-Line Eaton series imperial cable tray and ladder, 6" Height, 39" Length, 18" Width, Series 2-5 vertical tee up, Aluminum, 36" Radius

A vertical tee up joins three tray runs where the branch turns upward out of the plane of the main run. The B-Line 6A-18-VTU36 handles that transition in an 18 inch wide, 6 inch deep aluminum ladder tray system, curving the branch up on a 36 inch radius so conductors keep a bend radius through the change in elevation. If your branch drops instead of rising, a vertical tee down is the fitting you want, not this one.

The radius sets how gently the branch sweeps up, and it has to match the bend radius the cable in the tray needs. 36 inches is the largest of the common tray fitting radii and is the one specified for large power conductors and fiber that can't be bent tight. It also decides the space you must leave above the run: a 36 inch radius sweep needs roughly three feet of vertical clearance to complete the turn. If the drawings call out 12 or 24 inch radius fittings, use those instead so the run lines up.

The 6A-18-VTU36 weighs 39.635 lb and spans 39 inches in length. That is a one or two man lift depending on your access, and like any tray fitting it should be supported on both sides of the joint rather than hung from the run it is spliced into. Being aluminum rather than steel keeps that weight down for an 18 inch wide fitting.

Order Eaton B-Line part number 6A-18-VTU36. The number reads out as 6 inch rail, aluminum, 18 inch width, vertical tee up, 36 inch radius, so anyone checking a submittal can decode it against the drawing.

This tee is aluminum, which is the usual pick where weight matters or the environment is corrosive, since it needs no galvanizing to resist it. Steel tray is chosen where higher load per span is the driver. Mixing materials in one run is generally avoided, so if the existing tray is aluminum Series 2-5, stay with an aluminum fitting like this one.