4x4 Post Base Brackets, Carbon Steel, 4-Pack, Black

4x4 post base brackets deliver solid, wobble-resistant support for wood posts on decks, pergolas, pavilions, and railings. Each heavy-duty carbon steel post anchor uses a full-wrap design and a matte black powder-coated finish to help resist rust in outdoor builds. Sized for standard 4''x4'' applications, the inner post opening fits 3.6'' x 3.6'' and is recommended for 3.5'' x 3.5'' columns. Includes hardware for faster, cleaner installation on wood or concrete.

• Delivers full-wrap reinforcement to stabilize posts and reduce shifting or wobble


• Fits standard 4''x4'' builds; inner opening 3.6'' x 3.6'' (recommended for 3.5'' x 3.5'' posts)


• Resists corrosion with powder-coated carbon steel and 2mm wall thickness for outdoor durability


• Includes dual-purpose screw set plus wrench and sleeves for streamlined assembly


• Installs on wood or concrete for deck base plates, porch railings, pergolas, and pavilions

Lock your structure in place with a post anchor set designed for quick alignment and dependable holding power. Pre-drilled screw holes help speed up positioning, while the heavy-duty steel bracket body keeps your posts seated securely for cleaner-looking builds. Whether you’re reinforcing a deck railing, adding pergola supports, or anchoring pavilion columns, these matte black post base brackets deliver a consistent fit and a professional finish. Grab yours today and keep your next outdoor project moving without delays.

• Quantity: 4 pcs


• Per-piece dimensions: 3.8 x 5.5 x 6.4 in (96 x 140 x 163 mm)


• Inner post size: 3.6 x 3.6 in (91 x 91 mm)


• Recommended post size: 3.5 x 3.5 in


• Material: Carbon steel


• Wall thickness: 0.08 in (2 mm)


• Finish: Matte black powder-coated


• Net weight (set): 14 lb (6.35 kg)


• Included hardware: Dovetail Screws M5x25 (36), Serrated Sleeves M8 (18), Self-Tapping Screws M8x60 (18), Thin Wrench M8 open-end 14 (1)