
A 4x4 in. x 12ft. HD square post with .125 wall thickness in black powder-coated 6063-T6 aluminum, the heaviest-wall option in the gate post range for pedestrian and sliding gates.
A 4x4 aluminum gate post 12 ft long
This 4×4 aluminum gate post 12 ft long from Aluglobus Aluminum Systems is a 4×4 in. HD square post with a .125 wall thickness, the thickest wall among the square posts in the pedestrian gate post options. It is 6063-T6 aluminum with black AAMA 2604 super-durable powder coating, and its listed usage is pedestrian gates and sliding gates.
Where the 4x4 in. post fits
The pedestrian gate post options describe the 4 in. HD post as a standalone post, and the concrete footing option lists the 4×4 in. HD Square Post (.125 Thk). The sliding gate kits list a 4 in. square post for concrete footing alongside the 3 in. option. Choose the 4×4 in. post where your gate calls for a free-standing post set in concrete, and follow the included instructions and your local code for the footing.
Why the 12 ft length
The 4×4 in. HD post is listed in three lengths:
- 4×4 in. x 8ft. HD square post (.125 Thk)
- 4×4 in. x 11 ft. HD square post (.125 Thk)
- 4×4 in. x 12ft. HD square post (.125 Thk): this post
The 12 ft. length is the longest, for taller gates, deeper footings or projects where you want to cut to a custom height. Work out the height above grade and the depth your footing needs, then pick the shortest length that covers both. Confirm with our team if you are unsure.
Finishing and hardware
Top the post with the 4" flat press cap, listed for 4 in. square posts. Hinges, latches and sliding gate hardware are sold separately; check your gate's hardware list and ask our team to confirm fit with the 4×4 in. profile.
Handling a 12 ft post
A 12 ft. HD post with a .125 wall is a long, solid piece. Plan for two people when handling and setting it, brace it plumb while the footing cures, and confirm delivery details with our team before ordering. If you are building a sliding gate, list the post alongside the track, wheels and guide rollers so the whole order can be checked together.
Material & finish
What it is made of
4×4 in. x 12ft. HD Square Post (.125 Thk) – Black is made from aluminum 6063-t6, finished with AAMA 2604 Super-Durable Powder Coating in black.
6063-T6 is an architectural aluminum alloy made for extruded profiles. It gives clean, consistent shapes and takes a powder coating evenly, which is why it is widely used for fences, gates and other exterior building products.
AAMA 2604 is the American Architectural Manufacturers Association specification for high-performance organic coatings, powder coatings included, on aluminum extrusions. It sets test requirements for outdoor color and gloss retention, chalking and corrosion resistance.
Where it is used
Where this part goes
Listed use: Pedestrian Gates & Sliding Gates.