Aluminum 4″ x 4″ Post Base Cover

Designed to complement and accent your 4″ x 4″ post base, our classic black two-piece post base cover is an easy and decorative way of hiding unsightly post base seams and exposed hardware.

UPC CODE: 664723441092

Decorative and minimal in design, our fastener-free aluminum post base cover makes hiding unsightly post base seams and exposed hardware as easy as possible.

  • The two-piece design of our post base cover installs in seconds and makes it perfect for new and existing projects. Its classic yet modern look will complement and accent any outdoor project.
  • Made from marine grade aluminum and featuring a powder coated black finish, its durable build ensures it’ll last you for years to come. Whether you’re a busy contractor or a DIYer, our base cover will be perfect for you.

Fits over 4″ x 4″ nominal posts

  • Understanding Post Cap Sizes:
    • When a post cap fits a nominal or dressed post, the post measures 1/2″ less than the measurement listed.
      Example: a nominal or dressed 4″ x 4″ post cap fits a post that measures 3.5″ x 3.5″
    • When a post cap 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 post cap fits a post that measures 4″ x 4″


  • DESIGNED FORย | Use with nominal 4″ x 4″ posts
  • PROJECT VERSATILITY | Our post base cover is designed to accent and blend perfectly into both modern and classic projects.
  • EASY INSTALL | Its snap-together design means installation is quick and intuitive and no fasteners are required while its two-piece construction makes it perfect for new or existing projects
  • HIDE PROJECT IMPERFECTIONS | Helps hide unsightly gapping finishing, cut lines, and any other installation imperfections
  • MATERIAL & FINISH | This durable post base cover is made from marine grade aluminum and features a powder coated and thermally bonded black satin finish
  • TOUGH DEFENDER | Built to protect your nominal 4″ x 4″ post from the scuffing and chipping that tends to happen as a result of accidental contact with grass trimmers and lawn maintenance tools
  • LOW MAINTENANCE | Our post plate covers clean easily with soap and water, making maintenance simple
  • COMPATIBILITY | Compatible materials include wood, vinyl, composite, fiberglass, and metal


  • ACQ wood compatible
  • UV-Protected | prevents fading and discolouring caused by the sun’s harsh rays
  • Rust-Resistant | its durable aluminum construction and powder coated finish prevent peeling and blistering
  • Weather Protected | designed to last through North America’s harshest conditions
  • What’s Included: one (1) post base cover
  • Want a cohesive look? Much of our product line features the same powder coated finish and colour, which makes accenting your outdoor space consistent and uniform.
  • Possible Project Ideas: use our deck post base cover to complete your pergola, porch, deck, and more.
  • While great for these traditional projects, they’ll fit in well anywhere. Get creative and find a new way to incorporate them into your design today.
  • Ideal for use in moderate to high traffic locations
  • Ideal for contractors and DIYers
  • Novice skill set required for installation
  • Estimated installation time: 1 minute
  • Perfect for residential and commercial use
  • Materials and packaging are fully recyclable
  • Limited one (1) year warranty.