Steel Bolt Down Post Base Anchor for 4″ x 4″ Posts

Designed for use with nominal 4″ x 4″ posts, our bolt down post anchor is the easiest way of completing your next project. From wood to concrete, its material compatibility makes it the perfect addition to your outdoor space.

UPC CODE: 664723441146

Our surface mounted black bolt down post base anchor for nominal 4″ x 4″ posts was designed with functionality in mind. Its versatility and sleek design make it perfect for homeowners who have a surface mount post project to complete.

  • Its steel construction protects your post from weathering and seasonal elements while its sleek profile accents any outdoor design.
  • On top of protecting your post, its minimal and versatile features complement most residential and landscaping projects.

Designed for use with nominal 4″ x 4″ posts

Understanding Post Sizes:

  • When a product fits a nominal or dressed post, the post measures 1/2″ less than the measurement listed.
    Example: a nominal or dressed 4″ x 4″ product fits a post that measures 3.5″ x 3.5″
  • When a product fits a rough lumber or undressed post, the post size is the same as the measurement listed.
    Example: a 4″ x 4″ rough lumber or undressed product fits a post that measures 4″ x 4″


  • DESIGNED FOR | Designed for use with nominal 4″ x 4″ posts, our anchor is perfect for wood or concrete surface mount installations
  • PROJECT VERSATILITY | Its sleek design and black high gloss finish will complement any project or space
  • FINISH | Features a thermally bonded and polyester black powder coated glossy finish
  • MATERIAL | Made from 14 gauge steel
  • SURFACE COMPATIBILITY | Secures posts to wood or concrete surfaces with the appropriate 1/4″ diameter or #14 fasteners (not included).
  • QUICKLY SECURE | Pre-threaded bolts and self-locking nuts allow you to easily secure your post in the post base
  • ADDED SUPPORT | Depending on your structure, use one of the additional holes to increase strength and stability. The 1/8″ diameter holes are for screws and the others are 1/2″ in diameter and designed for lag bolts (not included).
  • TOUGH DEFENDER | Designed to allow for drainage and defend against the premature splitting, rotting, warping, and decay that tends to happen with posts installed directly on your deck or surface
  • POST PROTECTOR | Protects your posts from the accidental scuffs and scratches that may happen with seasonal maintenance
  • PROJECT IDEAS | Garden enclosures, lightweight decking barriers, birdhouses, mailboxes, lawn and garden signs, light and flag posts, planter holders, and more.
  • NO FASTENERS NEEDED | Typically, when pouring concrete, you insert fasteners and then let it set. With our anchor, it’s not needed and saves wasted time.
  • WHAT’S INCLUDED | One (1) bolt down post adapter
  • COMPATIBILITY | Compatible materials include wood, vinyl, composite, fiberglass, and metal (required fasteners sold separately and vary by material and project)


  • UV-Protected | prevents fading and discolouring caused by the sun’s harsh rays
  • Rust-Resistant | its durable steel construction and powder coated finish prevent peeling and blistering
  • Weather Protected | designed to last through North America’s harshest conditions
  • For installation on uneven surfaces, shims may be required for more accurate levelling.
  • Please Note: before building a permanent structure, it is important to take into consideration where you live and your typical exposure to the seasonal elements as product performance may change accordingly. This includes, but is not limited to, rain, wind, snow, ice, sunlight, and intense heat. Wearing personal protective equipment; safety glasses, etc., and using suitable fasteners for your application are equally as important in ensuring your installation goes smoothly and safely.
  • Additionally, load calculations are unavailable. Prior to construction, check with your local municipality for building code requirements in your area (consulting local building codes is required when supporting permanent structures).
  • For certain structures, we recommend consulting a professional to ensure that these products are appropriate for your intended application and that the structural components for which these products are to be used in connection with are sound.
  • Important: in no event shall Nuvo Iron™ be liable for any consequential, special, or incidental changes arising out of breach of local, municipal, country, state, provincial, and federal building codes or any other type of laws or bylaws. Furthermore, Nuvo Iron™ shall not be held liable for any loss or damage resulting from improper use.
  • Ideal for use in moderate traffic locations
  • Ideal for contractors and DIYers
  • Estimated installation time: 10 minutes
  • Moderate skill set required for installation
  • Prior to construction, check with your local municipality for building code requirements in your area.
  • Perfect for residential use
  • Materials and packaging are fully recyclable
  • Limited one (1) year warranty.