4-Rail™ Fiberglass Post

The Rhino 4-Rail is the industry’s second most popular profile.  Design allows the post to bend over when hit, then snap back into its normal upright position.

Available lengths: 62”, 66”, 72”

For pricing, click here. Minimum orders may apply.

Decals sold separately 

Product Details


  • Pultruded fiberglass set in a composite resin
  • Side-rails and reinforcing rib provide strength and rigidity
  • Temperature stable
  • Fire resistant
  • Pointed end for easy installation
  • Posts with PolyTech Coating™ come with a 10-year warranty


  • Available colors: Red, Orange, Yellow, Green, Blue, Purple, White, Brown
  • Length: 62”, 66”, 72”
  • Anchor Barb Kits:
    • Available for use in sandy soil or for vandal resistance. The kit includes one metal anchor barb and two rivets. Kits may be ordered installed, uninstalled (with the posts drilled for rivets), or parts only (uninstalled, not drilled). A second metal anchor barb may also be purchased as part of the kit.

PolyTech Coating™ US Patent # 6,158,919

Installation Instructions: 

Our patented PolyTech Coating™ blocks damaging UV rays, prevents fiberbloom (bottom picture), and is available on all of our Fiberglass Composite posts and comes with a 10-year warranty.

2,000-hour Weatherometer Testing 

Without PolyTech Coating        With PolyTech Coating


Traditional fiberglass posts get fuzzy over time when the damaging effects of UV light cause the surface resin of the post to evaporate. Without the surface resin, the glass fibers become exposed, making the post a safety hazard.

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