B-Line B293A-6GRN Eaton series strut fittings and accessories, 3.5" Height, 6" Length, 1.62" Width, 1.44lbs, Steel, Number of mounting holes (1) 9/16 in diameter (vertical), Bracket, channel opening downward, Uniform load capacity 1200 lb, DURA GREEN

The B293A-6GRN post base bracket is rated for a uniform load capacity of 1200 lb. That is the bracket's own rating, so the strut, anchors, and the substrate you fasten into all have to be rated to match or the assembly is limited by whichever is weakest.

There is one vertical mounting hole, 9/16 in diameter. That clears a 1/2 in anchor bolt or threaded rod with room to shim, which is the usual pairing for that hole size. It is a single-hole bracket, so it will not straddle a two-bolt anchor pattern.

Yes. The bracket is 1.62 in wide, which is the nominal 1-5/8 in strut width, so it lines up with standard 1-5/8 in channel. Overall it runs 6 in long and 3.5 in high. Orientation matters: it is built with the channel opening facing downward, so it is not the right part if you need the slot facing up or sideways.

DURA GREEN is Eaton B-Line's coated finish over a steel bracket, and it is the finish specified where plain pre-galvanized steel gets attacked, such as wash-down areas, water treatment, and chemical rooms. For an interior dry electrical room a plain or pre-galvanized bracket does the same mechanical job; the reason to buy the green one is the environment.

Plan on it. The B293A-6GRN is supplied as the bracket only, with one 9/16 in vertical hole, so you add the anchor or bolt through that hole plus the channel nuts, bolts, and washers that tie it to the strut. Nothing in the listed content includes fasteners.