B-Line Eaton series strut fittings and accessories, 4.12" Height, 4.12" Length, 1.62" Width, 0.56lbs, Aluminium, Pre-assembled fitting, Three hole cor

The B103AL is a three hole 90 degree corner angle for Eaton B-Line strut framing. It ties two channel members together at a right angle, so you use it where a strut run turns a corner or where a vertical post meets a horizontal rail. It is an aluminum fitting, 1/4 inch thick, with three bolt holes.

Leg dimensions run 4.12 inches by 4.12 inches with a 1.62 inch width, and the material is 1/4 inch thick. That 1.62 inch width sits within the face of standard 1-5/8 inch strut channel, so the fitting will not overhang the channel edges on a typical run.

No. The B103AL ships as a pre-assembled fitting, meaning the angle itself is supplied ready to install, but the mounting hardware is a separate line item. Order channel nuts and hex bolts to suit your strut size and the three holes in the fitting.

It is aluminum, both in base material and finish, rather than plated or galvanized steel. Aluminum does not rust, which is why crews reach for it in wash-down rooms, coastal exteriors, water treatment areas, and food plants. Keep the rest of the assembly consistent (aluminum channel and hardware) so you are not mixing metals in a wet location.

A corner angle like the B103AL is the part for a true out-of-plane 90 degree turn, where one channel runs horizontally and the other vertically, because the bracket carries the load around the bend. Flat plates and flat corner gussets are for joining two pieces of channel lying in the same plane. If your two struts are face to face at a right angle in one plane, you want a flat 90 degree plate, not this angle.