Pack of 10 heavy-duty steel 4x4 post bases, each 3.6x3.6 inches.
Ten black steel post bases are shown in use on pergolas, porch railings, deck posts, and mailboxes.
A wooden pergola with a retractable canopy and string lights is shown with a close-up of a post base.
Ten black steel post bases are shown supporting wooden deck posts.
A hand uses a drill to secure a black steel 4x4 post base to a wooden deck post.
10-pack of black heavy-duty steel 4x4 post bases with screws, fitting a wooden post.
Pack of 10 heavy-duty carbon steel 4x4 post bases, each 3.6x3.6 inches with dimensions labeled.
A 4x4 post base is shown installed on a concrete slab, with a 10-pack of bases and hardware below.
Pack of 10 heavy-duty steel 4x4 post bases, each 3.6x3.6 inches.
Ten black steel post bases are shown in use on pergolas, porch railings, deck posts, and mailboxes.
A wooden pergola with a retractable canopy and string lights is shown with a close-up of a post base.
Ten black steel post bases are shown supporting wooden deck posts.
A hand uses a drill to secure a black steel 4x4 post base to a wooden deck post.
10-pack of black heavy-duty steel 4x4 post bases with screws, fitting a wooden post.
Pack of 10 heavy-duty carbon steel 4x4 post bases, each 3.6x3.6 inches with dimensions labeled.
A 4x4 post base is shown installed on a concrete slab, with a 10-pack of bases and hardware below.

Bostome 4x4 Post Base 10-Pack – 3.6x3.6" Heavy Duty Steel Brackets

SKU: 800000116513-0070-US
Availability: In stock
$82.47
$82.47
Subtotal: $82.47
Pack of 10 heavy-duty steel 4x4 post bases, each 3.6x3.6 inches.

Bostome 4x4 Post Base 10-Pack – 3.6x3.6" Heavy Duty Steel Brackets

$82.47
Pack of 10 heavy-duty steel 4x4 post bases, each 3.6x3.6 inches.
Ten black steel post bases are shown in use on pergolas, porch railings, deck posts, and mailboxes.
A wooden pergola with a retractable canopy and string lights is shown with a close-up of a post base.
Ten black steel post bases are shown supporting wooden deck posts.
A hand uses a drill to secure a black steel 4x4 post base to a wooden deck post.
10-pack of black heavy-duty steel 4x4 post bases with screws, fitting a wooden post.
Pack of 10 heavy-duty carbon steel 4x4 post bases, each 3.6x3.6 inches with dimensions labeled.
A 4x4 post base is shown installed on a concrete slab, with a 10-pack of bases and hardware below.

Bostome 4x4 Post Base 10-Pack – 3.6x3.6" Heavy Duty Steel Brackets

$82.47
Description
Description
x

Building decks, pergolas, or porch railings often means dealing with wobbly posts that compromise stability and waste time on fixes. For busy builders, loose fittings lead to frustration and delays in projects.

Without reliable support, posts can shift under weight or weather, risking structural integrity and requiring constant maintenance. This not only increases costs but also interrupts your workflow, especially when using standard 4x4 lumber that demands precise anchoring to avoid gaps and bends.

The Bostome 4x4 Post Base 10-Pack delivers a robust solution with its heavy-duty steel construction. Crafted from 1.6 mm thick steel with a powder-coated finish, it resists corrosion and bending for long-lasting performance. The 3.6 x 3.6-inch inner cavity fits standard 4x4 posts snugly, ensuring square installation without rework. Each pack includes 174 plugs and self-tapping screws for complete coverage, plus a surface-mount design that works on concrete or wood—drill, fasten, and secure in minutes.

  • Zero-wobble support keeps structures straight and maintenance-free.
  • Precise fit eliminates sloppy gaps and costly adjustments.
  • All-in-one kit means no extra hardware store runs.

Engineered for pros and weekend warriors, this Duty Steel Post Base builds confidence in every project. Add the Bostome 4x4 Post Base 10-Pack to your cart today and install with ease.

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