B-Line B281AFLZN Eaton series strut fittings and accessories, 1.62" Height, 8" Length, 3" Width, 2.5lbs, Steel, Rectangular post base, flush to side, Fits channel type B22A, B, C, Electro-plated

The B281AFLZN rectangular post base is made for Eaton B-Line channel types B22A, B and C. If the strut post you are standing up is one of those profiles, the base mates to it. A different channel series is not covered by this part.

It describes how the strut sits on the base plate. On the B281AFLZN the post is set flush with one side of the rectangular plate rather than centered, so the whole bolt pattern projects out to one side of the column. That is what you want when the post has to land tight against a wall, curb or equipment edge. If you need the strut centered on the plate with fasteners on both sides, a flush-to-side base is the wrong pick.

Plate footprint is 8 by 3 inches with a 1.62 inch height, and the fitting weighs 2.5 lb. Lay that out before you drill: with a flush-to-side post, the full 8 inch run of plate extends away from the channel on one side, so you need clear, flat mounting surface along that direction.

The B281AFLZN is steel with an electro-plated finish, which is a light indoor-duty coating. For dry interior mechanical rooms, electrical rooms and conditioned spaces it is fine. For exterior, rooftop, washdown or corrosive areas, specify a hot-dip galvanized or stainless post base instead.

No. This is the post base fitting alone, a steel rectangular plate with the post flush to one side. Concrete anchors or floor fasteners, plus the bolts and channel nuts that tie the strut to the base, are ordered separately and sized to your slab or deck.

That is exactly what it does. The B281AFLZN anchors the foot of a B22A, B or C strut post to a floor or structural surface so the column carries conduit racks, cable tray supports, or equipment framing. It is an electrical-department fitting, steel construction, 2.5 lb.