B-Line Eaton series imperial cable tray and ladder, 6" Height, 69" Length, 36" Width, Series 2-5 horizontal tee, Aluminum, 48" Radius

Radius is driven by the bend radius of the cable, not the tray. Large power and fiber cables with a big minimum bend radius need a sweeping fitting like this 48 inch radius tee so conductors are not kinked where the run branches. Where you are pulling small control or instrumentation cable and space is tight, a shorter radius tee does the same job in less room.

It is aluminum. That makes it a common pick for outdoor, damp, coastal and chemical-exposure areas where galvanized steel would need extra coating, and it keeps the handling weight down for overhead work. Note that mixing aluminum fittings into a steel tray run is not good practice, so match the tee to the metal your straight sections are.

It weighs 65.9 lb. At 36 inches wide and 69 inches on the long dimension, that is a two-person lift or a rigged lift on a lift platform, and it means the support hangers either side of the branch point carry the fitting weight plus cable fill.

It is CSA certified, which is what a spec or inspector will usually want to see on tray and tray fittings for Canadian and cross-border commercial and institutional work.

What you are ordering under 6A-36-HT48 is the aluminum horizontal tee body itself. Connecting it to your straight sections takes splice plates and hardware sized to Series 2-5 tray, and the support hangers at the branch are separate items too, so add those to the order.

A horizontal tee takes one run and branches it in a single direction at the same elevation, giving three legs. If you need the run to split both left and right at the same point, that is a four-leg cross, not a tee. And if the branch has to change elevation, you want a vertical elbow or a riser, since this fitting stays flat.

Order it as Eaton B-Line 6A-36-HT48. That breaks down as 6 inch aluminum side rail, 36 inch tray width, horizontal tee, 48 inch radius, which is why the number changes if any one of those dimensions on your run is different.