Multi-Purpose 4″ x 4″ Plastic Post Base Anchor

Our post base anchor is quick and intuitive to install and an easy way of completing your next project. Made of black rigid plastic and compatible with wood, vinyl, composite, and more, it’s the perfect way of securing your posts to a deck or surface.

UPC CODE: 664723441078

Created with ease-of-use in mind, the minimal and functional design of our Canadian-made surface mount post base anchor makes securing your nominal 4″ x 4″ post to a deck or surface as easy as possible.

  • Its rigid polyoxymethylene construction is designed to protect your post from premature splitting, rotting, and warping and defend against accidental scuffs and scratches from seasonal lawn maintenance.
  • Classic black and featuring a satin finish, it easily blends into any outdoor project. Whether you’re a busy contractor or a DIYer looking for an easy backyard upgrade, our post base will be perfect for you.

Fits over 4″ x 4″ nominal 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 securing a nominal wood 4″ x 4″ post to any deck or surface
  • NORTHERN PRIDE | Proudly made in Canada
  • PROJECT VERSATILITY | Classic black and minimal in design, our surface mounted post base is designed for utility and to be a well-integrated part of your outdoor project
  • 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
  • ADDED SUPPORT | Offers improved stability and strength due to its wide base and flare-out design
  • BUILT TO LAST | Made of polyoxymethylene, our post base anchor is long lasting and durable. This material is used frequently in the automotive field for precision parts requiring high stiffness, low friction, and great dimensional stability.
  • SURFACE COMPATIBILITY | Secures posts to wood or concrete surfaces with the appropriate 3/8″ diameter fasteners (not included).
  • 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.
  • WHAT’S INCLUDED | One (1) post base anchor


  • ACQ wood compatible
  • UV-Protected | prevents fading and discolouring caused by the sun’s harsh rays
  • Rust-Resistant | its durable polyoxymethylene construction 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.
  • Want a cohesive look? Much of our product line features the same finish and colour, which makes accenting your outdoor space consistent and uniform.
  • Easily attaches to wood, fiberglass, composite, concrete, and more (required fasteners sold separately and vary by material and project)
  • “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
  • Moderate skill set required for installation
  • Estimated installation time: 10 minutes
  • Perfect for residential use
  • Materials and packaging are fully recyclable
  • Limited one (1) year warranty.