B-Line Eaton series imperial cable tray and ladder, 4" Height, 57" Length, 12" Width, Series 2-5 horizontal tee, Aluminum, 48" Radius

Plan for the full 57 inch overall length of the fitting along the main run, and the 48 inch bend radius governs the sweep into the branch. That radius is what protects large power conductors from being bent tighter than their allowable cable bend radius, so the fitting takes up considerably more space than a short-radius tee. Check clearances at walls, columns and overhead obstructions before hanging supports.

Yes. The 4A-12-HT48 horizontal tee carries a UL Classified rating, which is what an electrical inspector looks for when the tray is used as an equipment grounding conductor path under NEC Article 392. Keep the bonding jumpers across the splice plates per the manufacturer's instructions so the classification holds through the fitting.

This tee is aluminum, which is the usual pick for outdoor, coastal and mildly corrosive industrial areas because it does not need galvanizing to resist rust, and it is lighter to hang than steel. Steel tray is the choice where you need higher load capacity over long support spans. Mixing materials in one run is not good practice, so match the tee to whatever your straight sections are.

The tee itself is the fitting body. You still need splice plates and hardware at each of the three connection points, plus the supports (trapeze hangers, cantilever brackets or wall brackets) rated for the 12 inch tray width. Order splice plates in the same Series 2-5 aluminum family so the bolt pattern and the grounding path match.

It weighs 41.05 lb. That is a two-man lift at height, and with 57 inches of length and a 48 inch sweep it is awkward on a lift more than it is heavy. Have the trapeze or cantilever supports set on both the main run and the branch before you raise it.